日韩欧美在线视频免费,黄色国产91,欧美日韩亚洲国产,最近中文字幕在线,性高爱久久久久久久久,亚洲精品午夜不卡,一区二区三区福利视频

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.