... ,is one of the biggest manufacturer to manufacture motorcycle ,auto,diesel engine,general engine,gear Gallop own development-research team, advanced equipment ... gearElectric motorcycle gearMaterial: 20CrMnTi,C45, 40Cr, 42CrMo, stainless steel or special as your requirement.Valid mould:1-10Main processMeasuring&Testing: motorcycle parts-Gear ...