... 3.Small module,complexity 4.OEM,Non-standard Helical bevel reduction gears HENGKO LTD is specialized in manufacturing all kinds of ... mechanical equipments and components,include various kinds of gears and gear box.HENGKO Powder Metallurgy gear includes: bevel ... sun gear, straight helical gear, helical gear, multi-layer gears, miniature gears, small module gear reducer, all kinds of precision ...