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 36MnB4 is produced by XINGTAI STEEL which  has the advantages of stable composition, high purity of steel, small decarburization layer, less surface defects and good hardenability.It’s used to make high-strength rivets for new energy vehicles by a customer of XINGTAI STEEL Which reflects that the product performance is stable, cold heading performance is good, can meet the final product requirements.