Shanghai Primo Tools Co., Ltd is a professional bolting tools manufacturer, established in 2001 year, and locates in Shanghai where is the biggest city in China. Main products of the company are of PRIMO brand hydraulic torque wrenches, hydraulic wrench pumps, hydraulic bolt tensioners and manual torque wrenches etc., widely used in steel , shipbuilding, power station, petroleum, chemical, railway, rubber and other engineering industries. With a plant area of thousands of square meters, possess advanced processing technologies and lots of advanced CNC equipments, can rapidly design and manufact hydraulic wrenches and other bolting tightened tools with high quality. Finished products become active demand at home and overseas markets. Our ultimate goal is to produce high-quality bolt tightened tools and provide the best solution projects and after- service. Sincerely and warmly invite new and old customers to visit, inspect and guide us!