17 Articles of plastic being semi-finished products, namely, semi-finished synthetic plastic products in the form of pellets, foils, plates, rods, profiles, hoses, tubes, foams, fibers, films, sheets, granules, belts, industrial belts and blocks for use in a variety of industries; plastic components being semi-finished products, namely, semi-worked synthetic plastic and synthetic resins as semi-finished products in the form of pellets, foils, plates, rods, profiles, hoses, tubes, foams, fibers, films, sheets, granules, belts, industrial belts and blocks; plastic fibers, not for textile use; partially processed plastics, namely, semi-processed plastics; synthetic resins as semi-finished products in the form of pellets, foils, plates, rods, profiles, hoses, tubes, foams, fibers, films, sheets, granules, belts, industrial belts and blocks; sealing material, insulating material; flexible plastic piping for industrial, construction and agricultural use; plastics in the form of rods, sheets, foils, tubes, hoses, belts, industrial belts, permanent plugs and semi-processed plastic fittings and articles all of the foregoing items for use in manufacturing; flexible plastic industrial, construction and agricultural pipes for drainage and irrigation, for use in installation work and beverage dispensers; pipe couplings and pipe fittings made of plastic; semi-finished products, namely, extruded plastics in the form of bars, blocks, pellets, rods, plates and tubes; tinted, reflective and laminated plastic foils for fitting to windows, particularly in buildings and motor vehicles, namely, synthetic plastic as semi-finished products in the form of foils; polyvinyl chloride and articles thereof comprised in this class, namely, synthetic plastic as semi-finished products in the form of pellets, foils, plates, rods, profiles, hoses, tubes, foams, fibers, films, sheets, granules, belts, industrial belts and blocks; semi-processed polyvinyl chloride resins; polyvinyl chloride semi-finished products, namely, polyvinyl chloride resins being semi-finished products in the form of granules, powders, chips, flakes; semi-finished products, namely, semi-processed polyvinyl chloride resins in the form of rods sheets, foils tubes, hoses, belts, industrial belts, permanent plugs, floor and wall coverings, membranes, coatings, and mouldings, and goods made thereof in the nature of semi-processed polyvinyl chloride resins; semi-finished products, namely, extruded polyvinyl chloride resins particularly for production purposes; semi-finished products, namely, semi-processed polyvinyl chloride resin compounds; seals for flexible plastic piping for industrial, construction and agricultural use made of polyvinyl chloride; synthetic plastic as semi-finished products in the nature of rigid polyvinyl chloride profiles; semi-finished products, namely, semi-processed non-fluorinated polyvinyl chloride resins