Hejian Hengji Bit Manufacture Co.Ltd is located in Hejian and is specialized in manufacturing tricone bit ,steel tooth bit and PDC bit . With an experienced and professional team, we have exported our products to many countries and regions all over the world, especially Middle East,Africa,Asia... Our products enjoy a good reputation among our customers. We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual...