Cellular rubber; Cords of rubber; Crude rubber; Electrical tape; Film for mulching; Flexible tubes of plastic;Insulating refractory materials; Plastic film for industrial and commercial packing use; Plastic film for use in laminating paper; Plastic films for agricultural purposes; Plastic masking film for use when painting automobiles; Polymer film used for manufacturing electronic circuits; Polyurethane film for use in sealing and insulating