激情六月丁香婷婷,独臂刀客22集高清完整版在线观看,丁香深爱五月,亚洲美女高潮久久久,重生之炉鼎未删减完整版在线观看免费,韩国三级在线最新未删减,免费看黄色电影

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.