Electrical insulating materials; substrates, namely, fabrics, fleeces, foils, and paper impregnated or coated with hardenable synthetic resins for insulating purposes; Plastics in extruded form for use in manufacture; Semi-finished products made of plastics and fiber fabrics, namely, non-woven fabrics or knitted fabrics in the form of films, sheets or molded parts; Plastic fibers, other than for textile use; Insulators and insulants for electricity, heat, and sound; Electrical insulating mate...