... 1kg 4,delivery fast and good service Device Description: 1, pneumatic suction guns for blowing compressed air as a driving force ... to the bottom of the material. 7, installed in the auto-action system. 8, transport, collection, transportation objects. 9, spray ... , wheat processing plants, cosmetics, wood factories and chemical plants. 12, auto repair shop, clean store. 13, the plastic bag into the ...