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No.223,Xida Rd,WUxi,Jiangsu,China China
联系人 Ms. Yan Feng
办公地址 No.223,Xida Rd, WUxi, Jiangsu
Reaming shell is set with natural or synthetic diamond, and it is used to couple the drill bit with the core b
We manufacture high quality impregnated diamond bits and surface set diamond bits. The impregnated diamond bi
We can manufacture NQ, HQ, DCDMA standard and also Chinese standard drill rods. Our heat-treated drill rods
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