Common use of Announcement Letter Clause in Contracts

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.9% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.1% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.1% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng Zhengqiang

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.98.58% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang and Hu Shubao and Xxxxx XxxShubao, collectively hold the remaining 95.191.42% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.191.42% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangXxxxx Xxx Xxxxx Xxx

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.98.58% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li DonglinFeng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.191.42% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.191.42% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangLi Xxxxxxx Xx Donglin

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.94.41% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Hu Shubao Feng Zhengqiang and Xxxxx Xxx, collectively hold the remaining 95.195.59% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.195.59% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangHu Shubao Hu Shubao

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.918.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.181.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.181.62% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangLi Hongqi Li Hongqi

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.918.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.181.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.181.62% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangYin Xxxxxxxx Xxx Shenping

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.936.77% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.163.23% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.163.23% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangXxxx Xxxxxxxxxx Xxxx Xxxxxxxxxx

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.918.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin ShenpingXx Xxxxxxx, Li DonglinFeng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.181.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.181.62% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangYin Xxxxxxxx Xxx Shenping

Announcement Letter. Beijing BHD Petroleum Technology Co., Ltd. is a limited liability company duly established and valid existing under the PRC laws, of which (i) I hold a 4.936.77% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx XxxxxxxxxxYin Xxxxxxxx Xx Donglin, Yin Shenping, Li DonglinFeng Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.163.23% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.163.23% equity interest held by the other shareholders and will not encumber the transfer of the equity interest you proposed. This Announcement Letter is effective as of January 1, 2008. /s/ Feng Zhengqiang Feng ZhengqiangXxxx Xxxxxxxxxx Xxxx Xxxxxxxxxx