... :1.It's made of various kinds of materials, mainly used for collecting the large size dust, hair, suspended solids etc ... may adopt non-woven cloth, nylon nets, active carbon fiber, metal nets, purifying sponges etc;3.The outside framework is made ... ;4.It offers G1, G2, G3, G4, GN(nylon), GH (metal), GC (activated carbon) and GT (high temperature resistant) series for ...