Halogen-Free & Red-Phosphorus-Free Ultra-Thin Heat Shrink Tubing Product Introduction Manufactured from radiation-crosslinked polyolefin, this halogen-free and red phosphorus-free ultra-thin heat-shrink tube features low smoke and low toxicity, and does not release hazardous substances in high-temperature and high-humidity environments. As an upgraded alternative to H-type and G-type heat-shrink tubes, it provides insulation protection for high-precision industries such as