Rubber for use in the manufacture of stretch ceilings; gutta-percha for use in the manufacture of stretch ceilings; gum asbestos for use in the manufacture of stretch ceilings, mica for use in the manufacture of stretch ceilings; plastic in the form of bars, blocks, pellets, rods, sheets and tubes for use in manufacturing; building insulation, namely weather stripping and caulking; and flexible non-metallic tubing