1.new manufacturing process 2.imported high quality diamond 3.cost effective drill bit SpecificationsJSC-class diamond drill bit with a new manufacturing process, the performance of large diamond play. The selection of large size-class products imported high quality diamond,...

1.high quality diamond bit 2.suitable for all kinds of strata 3.high cost effective JSA-class diamond bit to meet the demand of the domestic market practice, the use made of quality diamond products, floor work for the 5-6mm, product works excellent, high quality, suitable for...

1.raw materials, long life, beautiful appearance. 2.common alloy drill bits Specifications of bit Use high-quality carbide and special geological tube alloy bit as raw materials, long life, beautiful appearance. The main products are common alloy drill bits and pieces, including...