PA, LLC

Exhibit 10.3

PA, LLC

0000 Xxxxx Xxxxxx Xxxx Xxxxxxxxx

Xxxxx 000

Xxxxxxxxx, Xxxxxxx 00000

U.S.A.

March 5, 2009

Hun-Xxx Xxx, Ph.d.

Chief Executive Officer

GTB Power Enterprise, Ltd.

0000 Xxxxxxxx Xxxxxxxxx, Xxxxx 0000

Xxx Xxxxxxx, XX 00000

U.S.A.

RE: Letter Ageement with respect to Master License Agreement dated March 5, 2009 among PA, LLC and GTB Power Enterprise, Ltd.

Dear Xx. Xxx:

Reference is made to that certain Master License Agreement dated March 5, 2009 entered among PA, LLC and GTB Power Enterprise, Ltd. (the “License Agreement”). PA, LLC and GTB Power Enterprise, Ltd. acknowledge that the exhibits contemplated to be attached to the License Agreement have been agreed in principle but have not been completed. This letter hereby confirms the agreement of both parties to cooperate in good faith to complete all of the exhibits to the License Agreement to the mutual satisfaction of both parties within thirty (30) days from the date hereof.

Both parties agree that the term “Government Relationship” in Section 23.2 of the License Agreement shall be defined to encompass the statutory language from the U.S. Foreign Corrupt Practices Act and incorporated into the License Agreement.

Very truly yours,

/s/    Xxxxxx Xxxxxxx

Xxxxxx Xxxxxxx,

Chief Executive Officer

Acknowledged and agreed hereto to the foregoing:

GTB Power Enterprise, Ltd.
By:		/s/    Hun-Xxx Xxx