... TONS manufacturer 420 TONS good quality injection machine for formed plastic productinjecting for pp,pe,ps,ppr,pvc,and so ... of thermoplastics, and have following features: 1. Adopting double-cylinder injection, with multilevel injection, pressure maintaining and anti ... achieved.3. Adopting five-pivot point double-elbow hydraulic machinery clamping devices, for energy saving and stable movement.4. ...