成人免费a视频,李雅在线观看一区国产,五月婷婷狠狠,精品国产自在2o18,狼伊人,五月天丁香婷婷网,久久亚洲精品无码观看不卡

Casus Products>> Casus

  The 120Cr produced by XINGTAI STEEL belongs to high carbon handmade tool steel with a very high carbon content, mainly used for manufacturing various tools, measuring tools, molds, cutting tools, etc. A customer of XINGTAI STEEL used this steel grade to produce files. The customer reported that the product has stable performance, high hardness, and good usage.