- screw barrel
- 2016-10-29 03:38
- Ruian Yumin machine screw co.,ltd is a factory specialized in making screw barrel, filter, mould, gearbox and recycling
- gearbox ZLYJ with hard tooth surface
- 2016-10-24 18:47
- Ruian Yumin machine screw is factory specialized in making gearboxes. The ZLYJ series gearbox is only for plastic inject