Spiral membrane filters for use in reverse osmosis, nanofiltration, ultrafiltration or microfiltration processes for the production of dairy products.

Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; iron-mongery and small items of metal hardware, namely, coils, plates of aluminum or other metals; metallic pipes and tubes; metal safes; goods of common metal, namely, facades, roofing, siding, doors, signs and displays; metal ores