Air sterilizers; Air purification apparatus; Garbage incinerators for industrial purposes; Garbage incinerators; Garbage incinerators for household purposes; Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; Sewage purification installations; Water filters; Sewage purification apparatus; Water sterilizers; Drinking water filters; Aquarium filtration apparatus; Waste water treatment tanks; Sewage disposal pl...