Beijing Ouman Petroleum and Geological Drilling Equipments Co., Ltd. (former Northern China Quanxing Super-hard Material Bit Factory) has been growing to the largest professional repair center for drilling bits in China.The product scopes of our company ...

AKM, since 2002, surface preparation, powder and wet paint facilities, guns accessories design, manufacturing installing. . Our team\'s over ten years of experience in the sector, providing a stable growth short term our company has become choice seeking ...