... performance of transimission!Manufacture: Dingzhou Jiayu Gear Manufacturing Co.,Ltd. ProductsAll kinds of gears (spur gear, bevel ... Steel , alloy steel , stainless steel , aluminum alloy , zinc alloy , brass , gray iron , nodular cast iron , ... , black of oxidation, zincing.FinishingSand blasting , polishing , plating , acid treatment , anodizing , painting and PVC powder coatingEquipmentSprial ...