... under normal temperature and humidity. Dust Air Filter Bag DescriptionThe filter bag adopt composite nonwoven cloth as filter material. The ... humidity.MaterialIt adopts synthetic fibre as the material.Filter Bag ApplicationIt is mainly used for air purification in electronic, ... mechanical, petrochemical and light industry.Technical DataFilter Grade: G1, G2, G3, G4, F5, F6, F7, F8, F9, H10, H11Filter ...