DOUTEC POWER is initially a pure technical corporation, who worked as consultant for bolt tools factories to solve technical problems, offered special solutions to big projects and provided products testing, site debugging, as well as after-sale service for these factories. Thus it gained rich actual experiences on solutions to big bolts tightening & loosening. Depending on such experiences, DOUTEC POWER don't want to be restricted on technical research any longer, but also have developed a series of professional torque tools for bolts tightening & loosening with its trademark DOUTEC POWER. The products are light, durable, precise, easily operated. During these years, through the continuous effort of the excellent technical sales team, the products have been sold throughout the world. Besides, DOUTEC POWER can customize non-standard bolts tightening & loosening solutions.

KENNER concentrates on producing & selling common hydraulic tools. It has a long history and rich experience in manufacturing hydraulic tools. Depending on advanced manufacturing crafts and precise checking instruments, its product quality ranks the top among the similar products. The main products are hydraulic cylinders, hand pumps, electric pumps, hydraulic pullers, hydraulic press, flange spreaders, bolt tensioners, hydraulic hose etc.