Our development depends on the advanced equipment, excellent talents and continuously strengthened technology forces for iadc532 12 1/4″ tricone bit, 12.25" IADC517 Tricone bit, drill bit oil IADC517, drag bit factory,Cone bits IADC437. Always for the majority of business users and traders to provide high quality products and excellent service. Warmly welcome to join us, let's innovation together, to flying dream. The product will supply to all over the world, such as Europe, America, Australia,Greek, Slovakia,Nairobi, Malta.The quality of our products is equal to OEM's quality, because our core parts are the same with OEM supplier. The above products have passed professional certification, and we not only can produce OEM-standard products but we also accept Customized Products order.