cold water soluble film, 1) Nontoxic, no formaldehyde, environmentally friendly 2) 40" width 3)25um,35um 4)200m-500m/roll cold water soluble film,1) Nontoxic, no formaldehyde, environmentally friendly2) 40" width3)25um,30um,35um,40um..4)100m-500m/roll