... ProductsAll kinds of gears (spur gear, bevel gear, sprial gear, ring gear, internal gear, sprocket, chain wheel) transmission, gear box, reducer ,shaft and sleeve ... meet your need for high precision on teeth of gear.CertificateISO9001:2000Minimum quantityAccept trial orderTrade term: 1. ... well-trained and proffesional engineer and staffs.4. Special discount and protection of sales area provided to our ...