Nera Petroleum Mechanical Manufacture Co., Ltd located in the industrial park of China's second largest oil field Shengli Oil Field is a high-tech company and takes the lead in producing, manufacturing and selling oil machinery. And the company's fixed assets valued at 10 million Yuan. Our company makes the research and development of new downhole tools as basic point the field of petroleum exploration and development of production equipment and the modernization of downhole tools as strategic positioning. On the basis of accepting European and American advanced technology, following closely the forefront of the international peer, our company independently developed adjustable Power Gauge STB, hydraulic pressure damping load, MWD/LWD downhole tools supporting, high-efficiency floating valve, Multi-branch well completion tools and vertical drilling tools and other machines with the international advanced level. It is an up-and-coming company in petroleum drilling industry. The company has passed the attestation of ISO9000:2000 quality system, passed the attestation of API, obtained the certificate to enter the net of PetroChina and Sinopec and Prizes for Technique Innovation and S&T of Dongying city in 2009. Our company has more than 10 senior engineers and engineers who make up a team of strong research capability. We take solidarity, enterprising, innovation and high-efficiency as our tenet and adopt designing measures of 3-D solid modeling, finite element analysis and motion simulation to come up with an intact and transplantable designing, producing and after service corporation administration system. Leading Business: design and manufacture of downhole tools, manufacture and Sales of oil pipe, design and manufacture of wired directional tools, manufacture and sales of screwdrill. Leading Products: controllable centering device, hydraulic pressure damping load; casing protector, floating valve, hole opener, high-efficiency screwdrill, wi