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 QSWRCH35K-B produced by Xingtai steel has stable chemical composition, good cold heading performance and excellent surface quality. It has been certified by a mainframe factory in China and used to manufacture automobile headlamp support bolts. Customers reflect the metallographic structure, non-metallic inclusions, mechanical properties and other performance indicators of QSWRCH35K-B materials of Xingtai steel can meet the requirements of the products.