Ion-exchange resins; unprocessed ion-exchange polymer resins; ion-exchange resin membranes; chemicals for use in industry; unprocessed plastics in primary form

[ Plastic film for industrial and commercial packing use; plastic semi-worked products in the form of beads, films or sheets; hollow plastic fiber tubes for industrial use and small plastic tubes for industrial use; semi-finished synthetic resins; plastic materials in extruded form for use in manufacture; ] extruded plastics in the form of sheets for use in manufacture; [ laminated plastic boards for use in manufacturing; semi-processed plastics in the form of foams for use as filtering mater...