Since the establishment of PetroZHR, after years of practice and technical exchanges, it has established a complete drawing library, which can independently produce several kinds of common tools with thousands of sizes, such as IBOP, fishing tools, downhole tools, etc. In addition, through learning the experience of advanced manufacturers, gradually improving the body structure and welding process, selecting the top-level tungsten carbide alloy, the high-quality milling tools developed
by PetroZHR have entered the high-end markets of many countries. Through the practical test, the high-quality milling tools have been well received by users, and gradually form a stable supply scale