POROUS VENT

Pipes of metal; tubes of metal; metal pipes and metal fittings therefor; iron, unwrought; iron, semi-wrought; steel, unwrought; steel, wrought; nonferrous metals and their alloys; Metal building materials, namely, awnings of metal; Metal construction materials, namely, metal piles; metal pulleys, springs and valves, not including machine elements; metal junctions for pipes; metal flanges; Metal storage tanks; Metal hardware, namely, springs and nuts; industrial packaging containers of metal

Forging moulds and press dies for metal forming; metalworking machines and machine tools, namely, drilling and milling tools; moulds being parts of machines for processing plastics; plastic processing machines; plastic processing apparatus, namely, machine tools for forming, riveting, swaging, and flaring of plastics; Machine parts, namely, super precision moulds and dies for use in the manufacturing of semiconductors; Semiconductor manufacturing machines and switching hydraulic or pneumatic systems sold as a unit; moulds being parts of machines for use in the manufacture of rubber goods; machines and apparatus for manufacturing rubber goods; machine elements, not for land vehicles, namely, shock prevention devices for machines, valves being parts of machines