[FORM 10-Q (Mark One) x For the quarterly period ended March 31, 2013 o For the transition period from __________ to __________ CLEANTECH SOLUTIONS INTERNATIONAL, INC. NEVADA 90-0648920 (State or other jurisdiction of incorporation of organization) (I.R.S. Employer Identification No.) No. 9 Yanyu Middle Road Qianzhou Village, Huishan District, Wuxi City Jiangsu Province, China 214181 (86) 51083397559 x o x] [SARBANES-OXLEY ACT OF 2002 I, Jianhua Wu, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International, Inc.; 2. Based on my knowledge, this 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 under] [CERTIFICATION OF PRINCIPAL FINANCIAL AND ACCOUNTING OFFICER SARBANES-OXLEY ACT OF 2002 I, Adam Wasserman, certify that: 1. I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements] [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. May 15, 2013 Jianhua Wu Chief Executive Officer May 15, 2013 Adam Wasserman Chief Financial Officer (Principal Accounting Officer) EX-32.1 4 f10q0313ex32i_cleantech.htm SECTION 1350]

[FORM 10-Q (Mark One) x For the quarterly period ended March 31, 2013 o For the transition period from __________ to __________ CLEANTECH SOLUTIONS INTERNATIONAL, NEVADA 90-0648920 (State or other jurisdiction oforporation of organization) (I.R.S. Employer Identification No.) No. 9 Yanyu Middle Road Qianzhou Village, Huishan District, Wuxi City] [SARBANES-OXLEY ACT OF 2002 I, Jianhua Wu, certify that: 1.I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International,; 2.Based on my knowledge, this report does notntain 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 AND ACCOUNTING OFFICERRBANES-OXLEY ACT OF 2002 I,am Wasserman, certify that: 1.I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International,; 2.Based on my knowledge, this report does notntain 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 THERBANES-OXLEY ACT OF 2002 (1) (2) The informationntained in the Report fairly presents, inl material respects, the financialndition and results of operations of thempany. May 15, 2013 Jianhua Wu ChiefExecutive Officer May 15, 2013am Wasserman ChiefFinancial Officer (Principal Accounting Officer)]

[FORM 10-Q (Mark One) x For the quarterly period ended March 31, 2013 o For the transition period from __________ to __________ CLEANTECH SOLUTIONS INTERNATIONAL, NEVADA 90-0648920 (State or other jurisdiction oforporation of organization) (I.R.S. Employer Identification No.) No. 9 Yanyu Middle Road Qianzhou Village, Huishan District, Wuxi City] [SARBANES-OXLEY ACT OF 2002 I, Jianhua Wu, certify that: 1.I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International,; 2.Based on my knowledge, this report does notntain 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 AND ACCOUNTING OFFICERRBANES-OXLEY ACT OF 2002 I,am Wasserman, certify that: 1.I have reviewed this quarterly report on Form 10-Q of Cleantech Solutions International,; 2.Based on my knowledge, this report does notntain 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 THERBANES-OXLEY ACT OF 2002 (1) (2) The informationntained in the Report fairly presents, inl material respects, the financialndition and results of operations of thempany. May 15, 2013 Jianhua Wu ChiefExecutive Officer May 15, 2013am Wasserman ChiefFinancial Officer (Principal Accounting Officer)]