"Extension rod butterfly valve" professional manufacturers, produced by our factory independent research and developm
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DMF - 0.1 type electromagnetic gas safety shut-off valve designed by the design and research institute of ministry of
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Large caliber hard/soft sealing butterfly valve product overview Developed by our factory large caliber hard/so
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I plant production of the pipe flange butterfly valve is one of the outstanding domestic butterfly valve supplier. In pe
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Product introduction: Air volume range about 5: 1 Differential pressure range of 20 t
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