超碰蜜桃|www.国产在线|北野未奈在线播放8mav|日b大片,日本aⅴ视频,99精品久久久久久久免费看蜜月,黄色专区

　　The material XGS45C of Xingtai Iron and Steel Corp.,Ltd is a dedicated material for shaft and rod, mainly used to produce automobile damping rod, engine gear ring and other products. Customers reflect that our XGS45C material has good control of  hardness, stable surface quality and less hemp pit, pitting, also has high product yield.