婷婷五月伊人,亚洲国产精品免费,日韩午夜福利在线观看,一区二区午夜按摩,久久精品国产免费,国产免费a级片全部,成人黄片在线播放

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.