AMENDMENT TO EQUITY PLEDGE AGREEMENT

THIS AMENDMENT TO EQUITY PLEDGE AGREEMENT (this “ Amendment ”) is entered into as of June 30, 2009, by and among Hangson Limited., a British Virgin Islands company incorporated under the laws of the British Virgin Islands (“ BVI Company ”); Suoke Clean Energy (Tongchuan) Co., Ltd., a limited liability company organized under the laws of the People’s Republic of China (“ PRC ”) and a wholly foreign owned enterprise (“ WFOE ”); Shaanxi Suo’ang Biological Science & Technology Co., Ltd, a company with joint stock limited liability organized under the laws of the PRC (“ Biological Company ”); and those shareholders of Biological Company as set forth on the signature page (collectively “ Pledgors ”, and with BVI Company, WFOE and Biological Company collectively referred to as the “ Parties ”). Sino Clean Energy, Inc., a Nevada corporation (“ Sino Clean ”), is made a party to this Agreement for the sole purpose of acknowledging the Agreement.

WHEREAS, BVI Company and Biological Company are parties to that certain Consulting Services Agreement dated as of August 18, 2006 (the “ Agreement ”), and in connection therewith, Pledgors have pledged all of their equity interests in Biological Company pursuant to that certain Equity Pledge Agreement dated as of August 28, 2006 (the “ Equity Pledge Agreement ”) as security for the performance by Biological Company of its obligations under the Agreement;

WHEREAS, BVI Company, Biological Company and WFOE have entered into an Amendment to Consulting Services Agreement dated as of even date herewith, whereby BVI Company has assigned the Agreement and transferred all of its rights and obligations thereunder to WFOE;

WHEREAS, Section 9 of the Equity Pledge Agreement provides that in the event that BVI Company assigns all of its rights and obligations under the Agreement, the assignee shall enjoy and undertake the same rights and obligations of BVI Company under the Equity Pledge Agreement as if the assignee is