Established in 1982, Shyang-Twu is recognized as one of the major manufacturers and exporters of a complete line of cam groove couplings in various alloys and accessory in Taiwan. Our Cam and Groove Couplings are produced to interchange dimensionally with the US Federal Military specification A-A-59326A Former MIL-C-27487 or EN14420-7 Former DIN2828. And maintained a certified quality management system according to the valid standard ISO 9001.