... Free 2.Environment Friendly 3.flexible,flame retardant 4.shrink ratio:2:1,3:1 Colored Heat Shrinking Tubing1.Halogen Free2. ... Environment Friendly3.flexible,flame retardant4.shrink ratio:2:1, ... and continuous expansion.The properties of environment-friendly,flexibility flame retadant,quick shrink and stable performance mark them widely ...