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Certificate of National Lab from WSWA, ASC
Certificate of National Lab from WSWA, ASC
We are approved by Water Supply and Wastewater Associaion to have a national lab, where we do all te...
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06/16/2011
ISO14001 Certificate
ISO14001 Certificate
ISO14001 CERTIFICATE
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05/24/2011
ISO9001 Certificate
ISO9001 Certificate
ISO 9001 certificate of zhengkang
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05/24/2011
Product Certificates
Certificate of One Pipe Joint
Certificate of One Pipe Joint
This is our patent for one pipe joint.
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06/16/2011
Utility Model Patent Certificate
Utility Model Patent Certificate
This is our patent for inlined press clad pipe joints.
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06/16/2011
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