av免费不卡在线观看网址,黄色视频大全ww,h在线观看网站,亚洲视频在线免费观看,男人天堂视频在线播放,日本女同羞羞视频,jk美女隐私视频网站

Casus Products>> Casus

QSCM435-C of Xingtai Steel,used to produce high strength bolts of grade 12.9, the product is used for the engine bolt. Our customer Honda, Dongfeng No.2 Car VolkswagenFactory reflect the product surface quality is good, the decarburization layer depth is small, uniform hardness, can completely satisfy the application in the field of high strength bolts in the car.

1. Engine Bolts 2.engine