7 MACHINE PARTS AND PARTS OF ENGINES NOT FOR LAND VEHICLES, NAMELY, GAS FILTERS, FILTERS FOR GAS FILTRATION, FILTERS FOR SEPARATING SOLID PARTICLES FROM GASES, GAS FILTERS ABLE TO STAND UP TO HIGH TEMPERATURES AND CORROSIVE ENVIRONMENTS, GAS FILTERS MANUFACTURES FROM RUSTPROOF METAL FIBERS, FILTERS MANUFACTURED FROM RUSTPROOF METAL FIBERS FOR GAS FILTRATION, FILTER CARTRIDGES, FILTER CARTRIDGES MANUFACTURED FROM RUSTPROOF METAL FIBERS, FILTER CARTRIDGES FOR GAS FILTRATION, FILTER CARTRIDGES MANUFACTURED FROM RUSTPROOF METAL FIBERS FOR GAS FILTRATION ABLE TO STAND UP TO HIGH TEMPERATURES