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Perfect Manufacturing2019-11-22 09:18:372019-11-22 09:20:50The surface treatment of ball part in ball valve
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Perfect Manufacturing2019-11-21 01:30:362019-11-21 01:31:48API 6D VS API 608 ball valve
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Perfect Manufacturing2019-11-18 09:14:162019-11-22 09:21:52The materials for valve packing