永久免费在线观看视频,亚洲人成人无码.WWW石榴,午夜性色一区二区三区不卡视频,亚洲欧美国产成人综合不卡日本一区三区二区最新欧美三级在线电影免费

In the 1990s, Fengchi created the built-in roll molder for the first time, which completely subverted the traditional steel wheel molding technology, simplified three steps into one of the molding process. And we solved the problem of diameter axial runout of steel wheels (within 0.6mm), and the rims were free from damage, crack, fracture and obvious deformation, and the vacuum tire has no chronic air leakage after the fatigue test and the radial impact test. So, “a device with a set of mould” largely increased the sample development efficiency, and reduces the cost of manufacturing products.