AINNER is one of the most professional manufacturers of high pressure hydraulic tools. AINNER is dedicated to developing high quality industrial boltingsystems, making industrial bolting safer and simpler. AINNER focuses on high level quality and safety, makes its own designs of hydraulictorque wrenches, pumps, hydraulic cylinders, bolt tensioners, which are widely used in steel, shipbuilding, power stations, petroleum, chemical and other engineeringindustries. Besides hydraulic torque wrenches, AINNER is also able to manufacture other products to meet all customers requirements.