WORK PRINCIEVacuum seal molding is a new type molding process and adopt singleness dry sand (no water, binder, tagger), then put the heated plastic film covering on the model to seal flask. Take out the air with vacuum pump. So the sand mould is tighten by pressure difference. The course is physics molding way.MAIN EQUIPMENTSVacuum system: Vacuum pump, Vacuum meter, Filter tank.Molding system: Die shoe, Vibrating table, Roast membrane device, Manipulator, Die lifter.Sand reclamation system: Sand screen, Elevator, Conveyor.COPMANY1. Listed companies in Shenzhen stock exchange of China.2. More than 1, 000 employees, 398 technical personnel.