ZHEJIANG DOUBLE-LIN VALVES CO.,LTD. Quality Control

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DOUBLE-LIN products quality are well controlled from raw material inspection, production inspection, accessories inspection, to finished products inspection. Strict quality inspections are conducted throughout the production process from beginning to the end.

Large proportion of the products are approved with international certificates such as CE, AGA, Watermark, ACS, EAC,DVGW, EN331 and WRAS