2046电影完整版未删减云播,日韩视频在线视频,av激情一区二区三区,xxx国产在线,色戒2002电影完整版下载 ,91视频官网,991本久久精品久久久久

　　The material Q10B21 which is produced by XINGTAI IRON AND STEEL CORP., LTD    mainly used to produce 8.8 level fasteners. Currently a lot of foreign fastener manufactures use this material in the production of passenger car fasteners.Q10B21-C has acquired the certification of joint owners factory and stable supply to the factory.Customers reflected that the Q10B21-C material with a stable composition,Uniform microstructure,Low inclusion content,Good hardenability.