Approved By ISO 9001:2000

This is to certify the quality management system of HENAN CHANGMAO YUANYI VALVE CO.,LTD. products flexible joint in accordance with ISO 9001, issued by BEIJING DALUHANGXING QUALITY CERTIFICATION CENTRE .
Registered No. : 04508Q11400R1S
Is in conformity with GB/T19001��2000 Standard GB/T19001-2000 idt ISO9001��2000
This certificate covers the following area production and service of flexible rubber joint,metal expansion device .
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