Valid Magnetics is a Hong Kong based technology company specialized in testing, measuring and controlling products or systems in torque, tension, load-force-weight field. We have our own manufacturing facilities and R& D department for designing, improving and producing the latest products and obtain several patents for the contribution and innovation in this area. We are the leading manufacturer of motor test equipment, hysteresis brakes / clutches and electronic tension devices in Asia with hundreds of local and oversea customers in over 20 countries.