MAS JHJX Machinery Manufacturing Co;.Ltd specialized in manufacturing hydraulic torque wrench, bolt tensioner, hydraulic wrench pump. Company established in 2000. JHJX has square drive torque wrench, hollow wrench(Low profile wrench, ratchet wrench) All JHJX model wrench using high strength Aluminium-Tatinium AirCraft Grade material. 360*180 swivel joint can suit any complex working conditions. JHJX-ultra-high torque JHB wrench has own patent which suit for higher torque requirements. JHJX Focus on hydraulic wrench area as we are professional. Supply ability is 500 per month. OEM offered/Customized design.