... quality more liable.7. The transported air is clean and without any oil-dust, as the blower sealing structure is ... surface, and since it is balanced precisely, it is almost without any vibration.12. Case Material: HT200, Impeller Material: QT500- ... transportation, waste water treatment, aquaculture, pneumatic transport, vacuum packing, oxygen generation, etc. 14.Oil tank: after milling they are all ...