Gold Member Since 2014
Audited Supplier
Hejian Hengji Bit Manufacture Co., Ltd.

8 1/2 Inch Mill Tooth Rock Bit, Tricone Roller Cone Bit, Well Drilling Bit manufacturer / supplier in China, offering API 8 1/2 Inch Mill Tooth Rock Bit, Mill Tooth Tricon Rock Bit, Tungsten Carbide Insert Tricone, Roller Cone Drill Bits, Tricone Roller Cone Drill Bits and so on.

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