Solidkey Petroleum Machinery Co., Ltd. established in 1983, essential products are Tricone bits, single cone bits, hole opener, drag bit, PDC bits, stabilizers, interrelated drilling equipments. 30 years experience on well drilling, advanced technology and equipments, we are ready for service all the time and customize Rock Bits and Sizes for special drilling applications and projects Advanced technology and equipment, excellent technicians, and scientific management will guarantee our products have superior quality. our products have been command a ready market in more than 40 countries and regions, including Europe, America, Africa and the Middle East. Our purpose is to supply the best quality products at the lowest and possible prices on the premise of honesty and trust worth