Applicable for blockages in indoor facilities as in vegetable-rinsing basins, washing basins, kitchens, bathrooms and lavato GQ-4 Feafure: Applicable for blockages in indoor facilities as in vegetable-rinsing basins, washing basins, kitchens, bathrooms and lavatories, and bathing facilities. The air pump can stand a pressure of 0.4 Mpa, with a sudden strong piercing pressure, can effectively ...