China OEM Made by cnc machine standard teeth heat treatment roller chain sprockets sprocket bike shop 에 의해서 에피소드 | 11월 3, 2022 | Product CatalogMaterial: MetalCommon: ANSIsprocket name: roller chain sprocketsprocket materials: C45, 40Mn, stainless metalProcession: gear grinding, warmth treatmentTooth Profile: Spur EquipmentRegular or Nonstandard: regularScope of software: Industrial/ machanicalPerformance:...