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Gate, Globe, Angle and Check Valve Figure Number System.
闸阀，截止阀，角阀和止回阀型号编制体系。
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The company mainly produces the products involving PP-R ball valve, angle valve, stop valve, check valve and pipe fittings.
本公司主要生产PP-R球阀、角阀、截止阀、止回阀、管接头等产品。
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