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API 6A Wellhead Mud Gate Valves
Cov rooj vag av nkos yog cov rooj vag ruaj khov, nce qia, rooj vag li qub nrog cov ntsaws ruaj ruaj, cov li qub no tau tsim los ua raws li API 6A tus qauv. Nws yog tsuas yog siv rau av nkos, cement. fracturing thiab dej kev pab cuam thiab yooj yim rau kev khiav lag luam thiab yooj yim los tswj.
Room 703 Building B, Greenland center, Hi-tech development Zone Xi'an, Suav teb
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