Goods made of plastic, each as semi-finished products, namely, plastic packing materials and insulating materials; semi-finished molded and stamped parts made of plastic, namely, filling gaskets, spacers, cable bushings, clamping sleeves and insulating washers and insulating bodies; semi-processed plastic materials for rollers, valve pistons and valve bodies; insulating washers of rubber; insulating covers for industrial machinery being bellows, namely flexible plastic tubes for length compen...