Zhejiang Cotech Valve is a wafer check valve specilist from China, we own a good reputation of excellent products quality and elegant products looking, products are strictly made according to ANSI, API, DIN, JIS, products range from: dual plate wafer check valve, wafer swing check valve, and we supply valve fittings to spain for many years, valve parts include:bonnet, body guides, stem, handwheel, protection tube etc.
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