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ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE
Issuing authority : 北京中润兴认证公司
Valid period : 2011/1/19 - 2014/1/18
ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE
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QUALITY MANAGEMENT SYSTEM CERTIFICATE
Issuing authority : 北京中润兴认证公司
Valid period : 2011/2/17 - 2014/2/16
QUALITY MANAGEMENT SYSTEM CERTIFICATE
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