久爱伊人,亚洲天堂aaa,欧美三级电影网站,国内一级黄色毛片,aaa毛片在线观看,青青福利,在线中文天堂

Casus Products>> Casus

  The SCM435-M produced by Xingtai steel is a series of simplified annealing products developed to meet the needs of market development. It is mainly used to produce 10.9 grade high strength fasteners. SCM435-M has lower hardness and better cold heading performance than ordinary SCM435. The customer reflects that the material can simplify the annealing process, reduce the production cost, and completely meet the requirements.