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double union ball valve DN50

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hot sale pvc ball valve, double union ball valve DN50 socket typehot sale pvc ball valve, double union ball valve DN50 socket type PVCU double union ball valve Materials: PVC-U Sizes: DN50 Standard: DIN High quality,Clear, light weight, rustless, oxidation-resistant, anti-corrosion and environment-friendly It is widely used in chemistry, electron, metallurgy, plastic, …
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