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  • Quality Control

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    COTECH has always made quality a priority。Cotech valve purchase raw material from a small number of foundries and forges with which it has long term cooperation.All are registered by ISO 9001-2015. To ensure its commitment to all customers from the first step. We mamufacturing leading quality check valves using most advanced processes which are cutting edge technology.

    With the aim to meet the ever increasing requirements of customers from all areas, we have developed QA/QC systems over the past 10 years which allow us to be able to give all our customers the confidence in our products.

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