Primo was founded in 2001 with 150 employees, as a leading bolting tools manufacturer in China, has more than 20 years of experience focused on developing and manufacturing high quality bolting tools including hydraulic torque wrenches, hydraulic pumps, hydraulic bolt tensioners, battery torque wrenches etc.
All parts are processed by 100+ precision CNC，lathes and other machine tools, checked and assured by QC department in our own huge factory with 8,000 square meters. All the assembled products have been tested for strength, stability and durability, and calibrated for torque or tensile force accuracy. You can always trust our products for the high quality and excellent performance.
Our R&D team is composed of more than 20 mechanical engineers, electrical engineers and software engineers, constantly develop and improve products. Together with the highly experienced technicians and skilled workers, advanced machine tools, we can provide completely superior bolting tools and solutions to satisfy applications and meet or even exceed your needs.

Striving to provide word-class bolting tools

Complete bolting tools product line manufactured by precision machine tools to meet all kind of applications. Robust, durable, easy operation and safe is the feedback from the market.

20 highly experienced engineers constantly develop and improve existing products and develop new products, we can provide solutions for various applications with quick response.

With the independent research, development and production in one factory, we can provide reasonable price and flexible branding cooperation.

Nearly 2000 set of tools and adequate spare parts in stock for instant delivery. Demo equipment, training, calibration can be supplied.