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. 

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.