ESTIC CORPORATION is engaged in manufacture, sale, repair and inspection of nut runners, hand nut runners, servo press and screw tightening equipment. The nut runner consists of alternating current (AC) turbo motors, sensors and controllers. It uses AC servomotor as the driving source, analyzes information from sensor though computer and controls the motor to tighten screws of bolts and nuts. The hand nut runner is a hand tool for tighten. The servo press is a press machine, consisting of AC servo motor, sensor and controller. The machine is applied in nut runner technology, uses AC servomotor as the driving source, presses object by changing the rotational force of the motor to linear motion through ball screw. The repair and inspection business provides repair of nut runners, hand nut runners, servo press, as well as inspection of accuracy for screw tightening.