... , GB, JIS, DIN, AGMA and non-standardSurface TreatmentCarburizing, hardening and tempering, Nitriding, high frequency treatment, ... , plating , acid treatment , anodizing , painting and PVC powder coatingEquipmentSprial bevel gear milling machine, hobbing machine ... and meet your need for high precision on teeth of gear.CertificateISO9001:2000Minimum quantityAccept trial order right hand worm shaft and ...