亚洲激情精品,欧美一级淫片免费视频黄,国产视频一,国产天堂素人系列在线视频,欧美一区黄,色五月视频,亚洲一在线

Casus Products>> Casus

  The QS45C-C is a dedicated material for shaft and rod, which is mainly used to produce piston rod of automobile shock absorber, Engine gear ring and other products. The piston rod customer reflected that our QS45C-C has stable composition, uniform organization, low inclusion content, good surface and cutting performance, and meets the requirements of the final product.