[CLEANTECH SOLUTIONS INTERNATIONAL, INC. FORM 10-K TABLE OF CONTENTS Page No. Part I Item 1. Business. 1 Item 1A. Risk Factors. 12 Item 1B. Unresolved Staff Comments. 23 Item 2. Properties. 23 Item 3. Legal Proceedings. 23 Item 4. Mine Safety Disclosures 23 Part II Item 5. 24 Item 6. Selected Financial Data. 25 Item 7. Management’s Discussion and Analysis] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the Registration Statement of Cleantech Solutions International, Inc. on Form S-3 (File No. 333-188142) of our report dated March 30, 2016 with respect to our audit of the consolidated financial statements of Cleantech Solutions International, Inc. as of December 31, 2015 and 2014 and for] [SARBANES-OXLEY ACT OF 2002 I, Jianhua Wu, certify that: 1. I have reviewed this annual report on Form 10-K of Cleantech Solutions International, Inc.; 2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances] [CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER SARBANES-OXLEY ACT OF 2002 I, Wanfen Xu, certify that: 1. I have reviewed this annual report on Form 10-K of Cleantech Solutions International, Inc.; 2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made,] [18 U.S.C. SECTION 1350, SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (1) (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. Dated: March 30, 2016 Jianhua Wu Chief Executive Officer Dated: March 30, 2016 Wanfen Xu Chief Financial Officer and Principal Financial and Accounting Officer]