haodiaocao这里只有精品一,男人午夜网站,国产免费插插插,国产精品欧美激情在线播放,国产成人aa在线视频,国产情侣自拍网站,狠狠色丁香婷婷

Casus Products>> Casus

  The 16MnCr5 produced by XINGTAI STEEL is a kind of case hardening steel.which can obtain hard and wear-resistant surface structure and good plastic and toughness core structure through appropriate production process. A customer uses our 16MnCr5 to produce engine valve tappet, who reflects that our product has good dimensional accuracy, stable composition, and low cracking rate during cold heading.