.Our glass&tile drill bits can be under different surface treatment, such as Ni-coated, Zn-coated, Blackoxidized, Tin-coated and so on.
.We also could do glass&tile drill bits with 1/4" hex grooved shanks and 7/16" hex grooved shanks to fit quick change connghtors
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Every product and technical innovation shall pass through systematic and strict testing and verification, so as to reach the perfect quality,Advanced testing equipment is the important guaranty to the product quality, We believe deeply that, lying on the perfect management, advanced equipment and earnest work of the staff, we can guarantee the best quality.
The advanced production equipment is the important insurance of the product quality, in order to guarantee that the best products are devoted to each customer; we introduced many sets advanced products equipment successively. We are deeply convinced, perfect management; advanced equipment and talent staffs are the assurance of the top-quality
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