Common use of SEGMENT INFORMATION Clause in Contracts

SEGMENT INFORMATION. The Group are organised into business units based on its products and services. During the current periods, the Group have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the Groups’ operating segments in the consolidated financial statements for the three-month and nine-month periods ended September 30, 2021 and 2020, respectively. In Thousand Baht For the three-month period ended September 30, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,707) (225) (18,186) - (18,186) Administrative expenses (29,442) 21 (17,263) (2,838) (49,522) 1,710 (47,812) Segment profit (loss) 1,404 444 13,315 (56) 15,107 3,713 18,820 Other income 4,800 Interest revenue 123 Financial cost (9,521) Share of profit (loss) from investments in joint Venture (364) Profit (loss) before income tax expenses 13,858 Income tax income (expense) (4,598) Profit (loss) for the period 9,260 In Thousand Baht‌‌ For the three-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 - 599,103 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (12,331) (4,999) (2,400) (1,170) (20,900) 148 (20,752) Administrative expenses (25,558) (10,336) (17,271) (648) (53,813) 1,839 (51,974) Segment profit (loss) (114,043) (10,785) (302,919) (1,166) (428,913) 5,626 (423,287) Other income 15,577 Interest revenue 51 Financial cost (7,468) Share of profit (loss) from investments in joint venture 615 Profit (loss) before income tax expenses (414,512) Income tax income (expense) 32,000 Profit (loss) for the period (382,512) In Thousand Baht For the nine-month period ended September 30, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,802) (3,247) (54,887) 749 (54,138) Administrative expenses (92,802) 2,133 (54,401) (4,184) (149,254) 1,657 (147,597) Segment profit (loss) (27,489) (69,508) 24,244 3,342 (69,411) 13,599 (55,812) Other income 30,555 Interest revenue 155 Financial cost (25,765) Share of profit (loss) from investments in joint venture (914) Profit (loss) before income tax expenses (51,781) Income tax income (expense) (9,187) Profit (loss) for the period (60,968) In Thousand Baht‌‌ For the nine-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 - 2,271,882 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,490) (19,632) (7,271) (3,602) (75,995) 877 (75,118) Administrative expenses (96,950) (41,840) (49,433) (2,000) (190,223) 4,525 (185,698) Segment profit (loss) (192,421) (29,126) (290,466) 2,559 (509,454) 15,651 (493,803) Other income 36,499 Interest revenue 847 Financial cost (17,533) Share of profit (loss) from investments in joint venture (2,344) Profit (loss) before income tax expenses (476,334) Income tax income (expense) 26,443 Profit (loss) for the period (449,891) Transfer prices between business segments are as set out in Note 4.

SEGMENT INFORMATION. The Group Company and its subsidiaries are organised into business units based on its products and services. During the current periodsperiod, the Group Company and its subsidiaries have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the GroupsCompany and its subsidiaries’ operating segments in the consolidated financial statements for the three-month and nine-month periods ended September 30March 31, 2021 and 2020, respectively. In Thousand Baht For the three-month period periods ended September 30March 31, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 620,141 (2,62744,744) 804,752 609,625 6,801 1,191,823 - 1,191,823 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (13,29814,072) 44 1,015 (4,7073,809) (2251,524) (18,18618,390) - 372 (18,18618,018) Administrative expenses (29,44234,321) 21 2,476 (17,26316,798) (2,838651) (49,52249,294) 1,710 35 (47,81249,259) Segment profit (loss) 1,404 444 13,315 (5647,673) 15,107 3,713 18,820 (69,876) (2,317) 2,430 (117,436) 6,203 (111,233) Other income 4,800 8,157 Interest revenue 123 - Financial cost (9,5217,454) Share of profit (loss) from investments in joint Venture venture (3641,309) Profit (loss) before income tax expenses 13,858 (111,839) Income tax income (expense) (4,598) 1,892 Profit (loss) for the period 9,260 (109,947) TRC CONSTRUCTION PUBLIC COMPANY LIMITED AND ITS SUBSIDIARIES NOTES TO INTERIM FINANCIAL STATEMENTS (CONT.) MARCH 31, 2021 In Thousand Baht‌‌ Baht For the three-month period periods ended September 30March 31, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 338,215 134,387 476,612 6,349 955,563 - 599,103 955,563 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33118,096) (4,9997,190) (2,4002,822) (1,1701,242) (20,90029,350) 148 369 (20,75228,981) Administrative expenses (25,55834,838) (10,33613,842) (17,27110,560) (648616) (53,81359,856) 1,839 974 (51,97458,882) Segment profit (loss) 1,592 (114,0433,950) (10,785) (302,919) (1,166) (428,913) 5,626 (423,287) 12,427 2,020 12,089 4,986 17,075 Other income 15,577 7,576 Interest revenue 51 227 Financial cost (7,468) Share of profit (loss) from investments in joint venture 615 Profit (loss) before income tax expenses (414,512) Income tax income (expense) 32,000 Profit (loss) for the period (382,512) In Thousand Baht For the nine-month period ended September 30, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,802) (3,247) (54,887) 749 (54,138) Administrative expenses (92,802) 2,133 (54,401) (4,184) (149,254) 1,657 (147,597) Segment profit (loss) (27,489) (69,508) 24,244 3,342 (69,411) 13,599 (55,812) Other income 30,555 Interest revenue 155 Financial cost (25,7655,710) Share of profit (loss) from investments in joint venture (9141,855) Profit (loss) before income tax expenses (51,781) 17,313 Income tax income (expense) (9,1876,119) Profit (loss) for the period (60,968) In Thousand Baht‌‌ For the nine-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 - 2,271,882 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,490) (19,632) (7,271) (3,602) (75,995) 877 (75,118) Administrative expenses (96,950) (41,840) (49,433) (2,000) (190,223) 4,525 (185,698) Segment profit (loss) (192,421) (29,126) (290,466) 2,559 (509,454) 15,651 (493,803) Other income 36,499 Interest revenue 847 Financial cost (17,533) Share of profit (loss) from investments in joint venture (2,344) Profit (loss) before income tax expenses (476,334) Income tax income (expense) 26,443 Profit (loss) for the period (449,891) 11,194 Transfer prices between business segments are as set out in Note 4.

SEGMENT INFORMATION. The Group Company and its subsidiaries are organised into business units based on its products and services. During the current periodsperiod, the Group Company and its subsidiaries have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the GroupsCompany and its subsidiaries’ operating segments in the consolidated financial statements for the three-month and nine-nine- month periods ended September 30, 2021 2019 and 20202018, respectively. In Thousand Baht For the three-month period periods ended September 30, 2021 2019 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 275,128 65,747 613,852 3,390 958,117 - 958,117 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,70721,434) (2253,753) (18,1862,276) - (18,1861,114) (28,577) 314 (28,263) Administrative expenses (29,442) 21 (17,26340,863) (2,8383,406) (49,52214,401) 1,710 (47,812425) (59,095) 124 (58,971) Segment profit (loss) 1,404 444 13,315 (5624,396) 15,107 3,713 18,820 8,661 20,571 601 5,437 2,304 7,741 Other income 4,800 19,345 Interest revenue 123 Financial cost 2 Interest expenses (9,5218,571) Share of profit (loss) loss from investments in joint Venture venture - Share of profit from investments in associate (36495) Profit (loss) Loss before income tax expenses 13,858 18,422 Income tax income expenses (expense7,115) (4,598) Profit (loss) for Loss the period 9,260 11,307 In Thousand Baht‌‌ Baht For the three-month period periods ended September 30, 2020 2018 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 261,922 105,118 277,096 1,718 645,854 - 599,103 645,854 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33117,489) (4,9997,270) (2,4002,642) (1,1701,066) (20,90028,467) 148 375 (20,75228,092) Administrative expenses (25,55843,503) (10,33617,923) (17,2718,266) (648405) (53,81370,097) 1,839 960 (51,97469,137) Segment profit (loss) 22,660 (114,0434,539) 32,877 (10,785784) (302,919) (1,166) (428,913) 5,626 (423,287) 50,214 3,584 53,798 Other income 15,577 24,712 Interest revenue 51 Financial cost - Interest expenses (7,4685,821) Share of profit loss from investments in associate (loss11,673) Share of loss from investments in joint venture 615 540 Profit (loss) before income tax expenses (414,512) 61,556 Income tax income expenses (expense18,904) 32,000 Profit (loss) for the period (382,512) 42,652 In Thousand Baht For the nine-month period periods ended September 30, 2021 2019 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 576,013 293,190 1,527,974 9,528 2,406,705 - 2,406,705 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,80250,418) (3,24725,663) (54,8876,915) 749 (54,1383,224) (86,220) 1,050 (85,170) Administrative expenses (92,802) 2,133 (54,401111,304) (4,18456,653) (149,25438,084) 1,657 (147,5971,219) (207,260) 2,458 (204,802) Segment profit (loss) (27,48951,027) (69,508114,359) 24,244 3,342 39,167 1,549 (69,411124,670) 13,599 9,829 (55,812114,841) Other income 30,555 37,234 Interest revenue 155 Financial cost 290 Interest expenses (25,76524,788) Share of profit (loss) loss from investments in joint venture (914) Profit (loss) - Share of profit from investments in associate 2,027 Loss before income tax expenses (51,781100,078) Income tax income expenses (expense10,609) (9,187) Profit (loss) for Loss the period (60,968110,687) In Thousand Baht‌‌ Baht For the nine-month period periods ended September 30, 2020 2018 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 800,428 270,905 494,448 3,811 1,569,592 - 2,271,882 1,569,592 Revenue from subsidiaries subsidiary - - - - - - 370 370 (370) - Revenue from associate - - 20,381 - 20,381 - - - - 20,381 Depreciation (45,49053,650) (19,63218,125) (7,2718,490) (3,6022,338) (75,99582,603) 877 1,116 (75,11881,487) Administrative expenses (96,950137,734) (41,84046,729) (49,43327,445) (2,0005,051) (190,223216,959) 4,525 2,202 (185,698214,757) Segment profit (loss) 46,316 (192,42138,286) 35,729 (29,1265,529) (290,466) 2,559 (509,454) 15,651 (493,803) 38,230 10,778 49,008 Other income 36,499 33,623 Interest revenue 847 Financial cost 654 Interest expenses (17,53314,251) Share of profit loss from investments in associate (loss36,644) Share of loss from investments in joint venture (2,344) 665 Profit (loss) before income tax expenses (476,334) 33,055 Income tax income expenses (expense27,805) 26,443 Profit (loss) for the period (449,891) 5,250 Transfer prices between business segments are as set out in Note 4.

SEGMENT INFORMATION. The Group Company and its subsidiaries are organised into business units based on its products and services. During the current periods, the Group Company and its subsidiaries have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the GroupsCompany and its subsidiaries’ operating segments in the consolidated financial statements for the three-month and nine-six- month periods ended September June 30, 2021 2020 and 20202019, respectively. In Thousand Baht For the three-month period ended September June 30, 2021 2020 Pipeline system Engineering system Engineeringsystem Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 137,859 75,699 498,754 4,904 717,216 - 717,216 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,70715,063) (2257,443) (18,1862,049) - (18,1861,190) (25,745) 360 (25,385) Administrative expenses (29,442) 21 (17,26336,554) (2,83817,662) (49,52221,602) 1,710 (47,812736) (76,554) 1,712 (74,842) Segment profit (loss) 1,404 444 13,315 (5679,970) 15,107 3,713 18,820 (14,391) 26 1,705 (92,630) 5,039 (87,591) Other income 4,800 13,346 Interest revenue 123 Financial cost 569 Interest expenses (9,5214,355) Share of profit (loss) loss from investments in associate - Share of loss from investments in joint Venture venture (3641,104) Profit (loss) before income tax expenses 13,858 (79,135) Income tax income (expense) 562 Profit (loss) for the period (78,573) In Thousand Baht For the three-month period ended June 30, 2019 Pipeline system Engineeringsystem Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 137,781 78,267 436,867 3,272 656,187 - 656,187 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (15,609) (9,677) (2,313) (1,067) (28,666) 430 (28,236) Administrative expenses (37,948) (23,529) (15,497) (404) (77,378) 882 (76,496) Segment profit (loss) (40,210) (44,808) 4,606 655 (79,757) 4,044 (75,713) Other income 8,573 Interest revenue 274 Interest expenses (7,467) Share of profit from investments in joint venture 1,042 Profit (loss) before income tax expenses (73,291) Income tax income (expense) (4,598456) Profit (loss) for the period 9,260 (73,747) In Thousand Baht‌‌ Baht For the threesix-month period ended September June 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 476,074 210,086 975,366 11,253 1,672,779 - 599,103 1,672,779 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33133,159) (4,99914,633) (2,4004,871) (1,1702,432) (20,90055,095) 148 729 (20,75254,366) Administrative expenses (25,55871,392) (10,33631,504) (17,27132,162) (6481,352) (53,813136,410) 1,839 2,686 (51,974133,724) Segment profit (loss) (114,04378,378) (10,78518,341) 12,453 3,725 (302,91980,541) 10,025 (1,166) (428,913) 5,626 (423,28770,516) Other income 15,577 20,922 Interest revenue 51 Financial cost 796 Interest expenses (7,46810,065) Share of profit (loss) loss from investments in associate - Share of loss from investments in joint venture 615 (2,959) Profit (loss) before income tax expenses (414,51261,822) Income tax income (expense) 32,000 (5,557) Profit (loss) for the period (382,51267,379) In Thousand Baht For the ninesix-month period ended September June 30, 2021 2019 Pipeline system Engineering system Engineeringsystem Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 300,885 227,443 914,122 6,138 1,448,588 - 1,448,588 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,80228,984) (3,24721,910) (54,8874,639) 749 (54,1382,110) (57,643) 736 (56,907) Administrative expenses (92,802) 2,133 (54,40170,441) (4,18453,247) (149,25423,683) 1,657 (147,597794) (148,165) 2,334 (145,831) Segment profit (loss) (27,48926,631) (69,508123,020) 24,244 3,342 18,596 948 (69,411130,107) 13,599 7,525 (55,812122,582) Other income 30,555 17,889 Interest revenue 155 Financial cost 288 Interest expenses (25,76516,217) Share of profit (loss) from investments in joint venture (914) 2,122 Profit (loss) before income tax expenses (51,781118,500) Income tax income (expense) (9,1873,494) Profit (loss) for the period (60,968) In Thousand Baht‌‌ For the nine-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 - 2,271,882 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,490) (19,632) (7,271) (3,602) (75,995) 877 (75,118) Administrative expenses (96,950) (41,840) (49,433) (2,000) (190,223) 4,525 (185,698) Segment profit (loss) (192,421) (29,126) (290,466) 2,559 (509,454) 15,651 (493,803) Other income 36,499 Interest revenue 847 Financial cost (17,533) Share of profit (loss) from investments in joint venture (2,344) Profit (loss) before income tax expenses (476,334) Income tax income (expense) 26,443 Profit (loss) for the period (449,891121,994) Transfer prices between business segments are as set out in Note 45.

SEGMENT INFORMATION. The Group Company and its subsidiaries are organised into business units based on its products and services. During the current periodsperiod, the Group Company and its subsidiaries have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the GroupsCompany and its subsidiaries’ operating segments in the consolidated financial statements for the three-month and nine-month periods ended September 30March 31, 2021 2020 and 20202019, respectively. In Thousand Baht For the three-month period periods ended September 30, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,707) (225) (18,186) - (18,186) Administrative expenses (29,442) 21 (17,263) (2,838) (49,522) 1,710 (47,812) Segment profit (loss) 1,404 444 13,315 (56) 15,107 3,713 18,820 Other income 4,800 Interest revenue 123 Financial cost (9,521) Share of profit (loss) from investments in joint Venture (364) Profit (loss) before income tax expenses 13,858 Income tax income (expense) (4,598) Profit (loss) for the period 9,260 In Thousand Baht‌‌ For the three-month period ended September 30March 31, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 338,215 134,387 476,612 6,349 955,563 - 599,103 955,563 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33118,096) (4,9997,190) (2,4002,822) (1,1701,242) (20,90029,350) 148 369 (20,75228,981) Administrative expenses (25,55834,838) (10,33613,842) (17,27110,560) (648616) (53,81359,856) 1,839 974 (51,97458,882) Segment profit (loss) 1,592 (114,0433,950) (10,785) (302,919) (1,166) (428,913) 5,626 (423,287) 12,427 2,020 12,089 4,986 17,075 Other income 15,577 7,576 Interest revenue 51 Financial cost 227 Interest expenses (7,4685,710) Share of profit from investments in associate (loss1,596) Share of loss from investments in joint venture 615 Profit (loss259) Loss before income tax expenses (414,512) 17,313 Income tax income expenses (expense6,119) 32,000 Profit (loss) for Loss the period (382,512) 11,194 In Thousand Baht For the ninethree-month period periods ended September 30March 31, 2021 2019 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 163,104 149,176 477,255 2,866 792,401 - 792,401 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,80213,375) (3,24712,233) (54,8872,326) 749 (54,1381,043) (28,977) 306 (28,671) Administrative expenses (92,802) 2,133 (54,40132,493) (4,18429,718) (149,2548,186) 1,657 (147,597390) (70,787) 1,452 (69,335) Segment profit (loss) 13,579 (27,48978,212) 13,990 293 (69,50850,350) 24,244 3,342 3,481 (69,411) 13,599 (55,81246,869) Other income 30,555 9,316 Interest revenue 155 Financial cost 14 Interest expenses (25,7658,750) Share of profit (loss) loss from investments in joint venture (914) Profit (loss) - Share of profit from investments in associate 1,080 Loss before income tax expenses (51,78145,209) Income tax income expenses (expense3,038) (9,187) Profit (loss) for Loss the period (60,968) In Thousand Baht‌‌ For the nine-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 - 2,271,882 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,490) (19,632) (7,271) (3,602) (75,995) 877 (75,118) Administrative expenses (96,950) (41,840) (49,433) (2,000) (190,223) 4,525 (185,698) Segment profit (loss) (192,421) (29,126) (290,466) 2,559 (509,454) 15,651 (493,803) Other income 36,499 Interest revenue 847 Financial cost (17,533) Share of profit (loss) from investments in joint venture (2,344) Profit (loss) before income tax expenses (476,334) Income tax income (expense) 26,443 Profit (loss) for the period (449,89148,247) Transfer prices between business segments are as set out in Note 45.

SEGMENT INFORMATION. The Group are organised into business units based on its products and services. During the current periods, the Group have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the Groups’ operating segments in the consolidated financial statements for the three-month and ninesix-month periods ended September June 30, 2021 and 2020, respectively. In Thousand Baht For the three-month period ended September June 30, 2021 Pipeline system Engineering system Engineeringsystem Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 552,318 5,660 661,093 5,636 1,224,707 - 1,224,707 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,70711,360) (225167) (18,1865,286) - (18,1861,498) (18,311) 377 (17,934) Administrative expenses (29,442) 21 (17,26329,039) (2,838364) (49,52220,340) 1,710 (47,812695) (50,438) (88) (50,526) Segment profit (loss) 1,404 444 13,315 18,780 (5676) 15,107 3,713 18,820 13,246 968 32,918 3,683 36,601 Other income 4,800 17,598 Interest revenue 123 32 Financial cost (9,5218,790) Share of profit (loss) from investments in joint Venture (364) 759 Profit (loss) before income tax expenses 13,858 46,200 Income tax income (expense) (4,5986,481) Profit (loss) for the period 9,260 39,719 In Thousand Baht‌‌ Baht For the three-month period ended September June 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 137,859 75,699 498,754 4,904 717,216 - 599,103 717,216 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33115,063) (4,9997,443) (2,4002,049) (1,1701,190) (20,90025,745) 148 360 (20,75225,385) Administrative expenses (25,55836,554) (10,33617,662) (17,27121,602) (648736) (53,81376,554) 1,839 1,712 (51,97474,842) Segment profit (loss) (114,04379,970) (10,78514,391) 26 1,705 (302,91992,630) 5,039 (1,166) (428,913) 5,626 (423,28787,591) Other income 15,577 13,346 Interest revenue 51 569 Financial cost (7,4684,355) Share of profit (loss) from investments in joint venture 615 (1,104) Profit (loss) before income tax expenses (414,51279,135) Income tax income (expense) 32,000 562 Profit (loss) for the period (382,51278,573) In Thousand Baht For the ninesix-month period ended September June 30, 2021 Pipeline system Engineering system Engineeringsystem Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 1,172,459 (34,37739,084) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 1,270,718 12,437 2,416,530 - 2,416,530 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (38,73025,432) 892 848 (13,8029,095) (3,2473,022) (54,88736,701) 749 (54,13835,952) Administrative expenses (92,80263,360) 2,133 2,112 (54,40137,138) (4,1841,346) (149,25499,732) 1,657 (147,59753) (99,785) Segment profit (loss) (27,48928,893) (69,50869,952) 24,244 3,342 10,929 3,398 (69,41184,518) 13,599 9,886 (55,81274,632) Other income 30,555 25,755 Interest revenue 155 32 Financial cost (25,76516,244) Share of profit (loss) from investments in joint venture (914550) Profit (loss) before income tax expenses (51,78165,639) Income tax income (expense) (9,1874,589) Profit (loss) for the period (60,96870,228) In Thousand Baht‌‌ Baht For the ninesix-month period ended September June 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 476,074 210,086 975,366 11,253 1,672,779 - 2,271,882 1,672,779 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,49033,159) (19,63214,633) (7,2714,871) (3,6022,432) (75,99555,095) 877 729 (75,11854,366) Administrative expenses (96,95071,392) (41,84031,504) (49,43332,162) (2,0001,352) (190,223136,410) 4,525 2,686 (185,698133,724) Segment profit (loss) (192,42178,378) (29,12618,341) 12,453 3,725 (290,46680,541) 2,559 10,025 (509,454) 15,651 (493,80370,516) Other income 36,499 20,922 Interest revenue 847 796 Financial cost (17,53310,065) Share of profit (loss) from investments in joint venture (2,3442,959) Profit (loss) before income tax expenses (476,33461,822) Income tax income (expense) 26,443 (5,557) Profit (loss) for the period (449,89167,379) Transfer prices between business segments are as set out in Note 4.

SEGMENT INFORMATION. The Group are organised into business units based on its products and services. During the current periodsperiod, the Group have not changed the organisation of their reportable segments. The following tables present revenue and profit information regarding the Groups’ Group operating segments in the consolidated financial statements for the three-month and nine-month periods ended September 30March 31, 2021 2022 and 20202021, respectively. In Thousand Baht For the three-month period periods ended September 30March 31, 2021 2022 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 320,209 4,707 463,676 18,787 807,379 (2,627) 804,752 143,701 - 547,442 145,644 836,787 - 836,787 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (13,298) 44 (4,707) (225) (18,1866,106) - (18,1864,685) (6,116) (16,907) 358 (16,549) Administrative expenses (29,44216,320) 21 - (17,26327,235) (2,83816,855) (49,52260,410) 1,710 1,038 (47,81259,372) Segment profit (loss) 1,404 444 13,315 (5610,816) 15,107 3,713 18,820 - (9,794) (5,572) (26,182) 5,223 (20,959) Other income 4,800 3,597 Interest revenue 123 320 Financial cost (9,5219,799) Share of profit (loss) from investments in joint Venture venture (3644,898) Profit (loss) before income tax expenses 13,858 (31,739) Income tax income (expense) (4,5981,706) Profit (loss) for the period 9,260 (33,445) In Thousand Baht‌‌ Baht For the three-month period periods ended September 30March 31, 2020 2021 (Restated) Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 82,352 30,908 479,530 6,313 599,103 526,665 (57,978) 682,986 6,801 1,158,474 - 599,103 1,158,474 Revenue from subsidiaries subsidiary - - - - - - - Revenue from associate - - - - - - - Depreciation (12,33112,858) 1,503 (5,511) (4,9991,524) (2,40018,390) 372 (1,170) (20,900) 148 (20,75218,018) Administrative expenses (25,55831,371) 3,669 (20,941) (10,336651) (17,27149,294) 35 (648) (53,813) 1,839 (51,97449,259) Segment profit (loss) (114,04342,117) (10,78569,816) (302,9198,189) 2,430 (1,166117,692) 6,203 (428,913) 5,626 (423,287111,489) Other income 15,577 8,157 Interest revenue 51 - Financial cost (7,468) Share of profit (loss) from investments in joint venture 615 Profit (loss) before income tax expenses (414,512) Income tax income (expense) 32,000 Profit (loss) for the period (382,512) In Thousand Baht For the nine-month period ended September 30, 2021 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 1,492,668 (34,377) 1,734,394 31,224 3,223,909 (2,627) 3,221,282 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (38,730) 892 (13,802) (3,247) (54,887) 749 (54,138) Administrative expenses (92,802) 2,133 (54,401) (4,184) (149,254) 1,657 (147,597) Segment profit (loss) (27,489) (69,508) 24,244 3,342 (69,411) 13,599 (55,812) Other income 30,555 Interest revenue 155 Financial cost (25,7657,454) Share of profit (loss) from investments in joint venture (9141,309) Profit (loss) before income tax expenses (51,781112,095) Income tax income (expense) (9,187) 1,601 Profit (loss) for the period (60,968) In Thousand Baht‌‌ For the nine-month period ended September 30, 2020 Pipeline system Engineering system Civil work Sales and other services Total Segments Adjustments and eliminations Consolidated Revenue from external customers 558,426 240,994 1,454,896 17,566 2,271,882 - 2,271,882 Revenue from subsidiaries - - - - - - - Revenue from associate - - - - - - - Depreciation (45,490) (19,632) (7,271) (3,602) (75,995) 877 (75,118) Administrative expenses (96,950) (41,840) (49,433) (2,000) (190,223) 4,525 (185,698) Segment profit (loss) (192,421) (29,126) (290,466) 2,559 (509,454) 15,651 (493,803) Other income 36,499 Interest revenue 847 Financial cost (17,533) Share of profit (loss) from investments in joint venture (2,344) Profit (loss) before income tax expenses (476,334) Income tax income (expense) 26,443 Profit (loss) for the period (449,891110,494) Transfer prices between business segments are as set out in Note 4.