Permanent Polyester (B-423) is ideal for electronic PCB and component identification, bar code labels, rating plates and solar panel identification. Glossy white finish with permanent acrylic is thermal transfer printable. UL approved;CSA accepted. Meets requirements of a halogen-free material per DIN VDE 0472 part 815. Service temperature of -94 to 230° F (-70 to 110° C). A ribbon is required to print this material. Use Part Number R6013.