亚洲天天骚女现场视频,www.888日本,亚洲第一天堂无码专区日韩,免费一级黄片视频在线观看无码,亚洲日韩线精品一区一区一区,一级无码日韩毛片,国产免费美女被艹视频

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.