... and sleeve etc. OEM service is acceptable.ApplicationSuitable for various light vehicle transmissions, auto parts, construction ... and non-standardSurface TreatmentCarburizing, hardening and tempering, Nitriding, high frequency treatment, black of oxidation, zincing.FinishingSand blasting , ... sample or drawing and meet your need for high precision on teeth of gear.CertificateISO9001:2000Minimum ...