Plastics, namely, semi-processed plastic substances; plastic fibres, not for textile use; recycled plastic pellets for use in further manufacture; plastics in the form of films, sheets, rods, slabs or tubes for use in manufacturing; synthetic plastic as semi- finished products in the form of, boards, and poles; flexible plastic pipes for plumbing purposes; packing, padding and stuffing materials of plastics or rubber; semi-processed synthetic resins