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API 7-1 Drilling Livalve tsa Khoele
Li-valve tsa likhoele tsa ho phunya li emisa mokelikeli hore o se ke oa phalla holim'a khoele ea ho phunya hangata haeba boro e raha ebe karoloana e theoha tlase.LANDRILL e ka fana ka boleng ba boleng bo felletseng ba ts'ireletso e felletseng (FOSV), Kelly valve, Inside blowout preventer(IBOP), Drop-in check valve. , Belofo ea ho phaphamala.
Room 703 Building B, Greenland center, Hi-tech development zone Xi'an, China
86-13609153141
