17 Extruded plastics [semi-finished products]; Extruded plastic in the form of bars, blocks, pellets, rods, sheets and tubes for use in manufacturing; Flexible hoses composed of plastics; Insulating materials produced from plastics; Carbon fibre reinforced synthetic resins for use in manufacture; Plastics in extruded form for use in manufacture; Plastics in the form of sheets, films, blocks, rods and tubes; Synthetic resins in rod form for use in manufacture; Plastic substances, semi-processed; Threads of plastic materials, other than for textile use; Plastics materials in the form of blocks [semi-finished products]; Plastics materials in the form of tapes [semi-finished products]; Plastics materials in the form of sections [semi-finished products]; Plastics materials in the form of plates [semi-finished products]; Plastics materials in the form of rods [semi-finished products]; Plastics materials in the form of strips [semi-finished products]; Plastics materials in the form of sections [semi-finished products]; Plastics materials in the form of plates [semi-finished products]; Pipes made of plastic for motor vehicles; Hose pipes made of plastic; Plastic rods and bars; Plastic substances, semi-processed.