cold Water Soluble Film,use for lace embroidery backing 25um,30um,35um,40um, 100m-500m/roll cold Water Soluble FilmFeatures:1) Nontoxic, no formaldehyde, environmentally friendly2).use for lace embroidery backing3).25um,30um,35um,40um,4).100m-500m/roll Cold Water Soluble Film