G-ROCK is a professional manufacturer of linear motion products. Especially, we specialize in high-force linear actuators for large-scale automation applications. We make satellite actuator/positioner, DiSeqC H-H mount, turbo linear actuator(D-jack), motor gearbox, heavy duty solar tracker ***** ***** Our Linear actuator, linear motor models come in forces from 30kgs to 2, 000kgs and strokes from 1" to 48", max speed up to 60mm/s; and you are optional to these parameters: reed/ optical/ pot/ hall sensor, acme/ ball screw, 12/ 24/ 36/ 48 VDC, 110/230 VAC, ***** ***** The wider range of styles, sizes, forces and speeds available in G-rock&＃039; linear actuators makes for an equally broad range of applications. Our mission is to develop a world leading line of affordable Automations devices, and maintain its position for offering the lowest priced motion systems available anywhere in the world: To focus on quality products, service, and leading edge technology To price for value to the customer, and profit for our future growth To build our company through trust, integrity, fair and honest dealings To respond to client&＃039;s needs with leadship and maturity by all employees. OEM/ODM are welcome.