... Barrel conical twin screw and barrel for pp sheet extruder Ruian Yumin machine screw co.,ltd is a ... . Founded in 1987, Yumin machine screw factory has worked in this field for 22 years and has become ... the main supplier of some famous plastic machine and package machine factories ... plating: 0.03-0.08mmDepth of alloy layer:>2mmUsed for granulation,PP, PE, PA, PC, ABS,AS ...