... arm, separation unloading device, roots blower or vacuum pump), Positive press pneumatic conveying machine (pressure pump, combination pump, Air compressor) and Electric control system ... so on.The capacities of the products have some series:20, 50, 100, 150, 200, 300,400,500 t/h. ... ship (car) tonnage. It has below series: 12, 16, 18, 20, 25, 30,35m. Productions:XS series bulk pneumatic ship unloading ...