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 4.41% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang and Xxxxx Xxx, collectively hold the remaining 95.59% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.59% 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/ Hu 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 4.418.58% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li DonglinFeng Zhengqiang, Feng Zhengqiang Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5991.42% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5991.42% 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/ Hu Shubao Hu ShubaoLi 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 4.414.9% 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 95.5995.1% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5995.1% 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/ Hu Shubao Hu ShubaoFeng 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 4.418.58% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang and Xxxxx XxxHu Shubao, collectively hold the remaining 95.5991.42% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5991.42% 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/ Hu 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 4.4118.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5981.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5981.62% 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/ Hu Shubao Hu ShubaoLi 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 4.4118.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5981.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5981.62% 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/ Hu Shubao Hu ShubaoYin 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 4.4136.77% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Donglin, Feng Zhengqiang Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5963.23% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5963.23% 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/ Hu Shubao Hu ShubaoXxxx 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 4.4118.38% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li DonglinXx Xxxxxxx, Feng Zhengqiang Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5981.62% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5981.62% 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/ Hu Shubao Hu ShubaoYin 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 4.4136.77% equity interest and (ii) the other shareholders, Li Hongqi, Xxxx Xxxxxxxxxx, Yin Shenping, Li Xxxxxxxx Xx Donglin, Feng Zhengqiang Zhengqiang, Hu Shubao and Xxxxx Xxx, collectively hold the remaining 95.5963.23% equity interest. I hereby irrevocably waive any pre-emptive right I may have upon the other 95.5963.23% 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/ Hu Shubao Hu ShubaoXxxx Xxxxxxxxxx Xxxx Xxxxxxxxxx