of a cheap film envelopes 8% ~ 16%.
3. Spec. sizes :
BOPS film (Biaxially oriented polystyrene film) ,
Density :1.05(g/CM3)
Color: Clear/ transparent,
Thickness: 27 g/m2 ( 30 Microns ) ,29 g/m2 ( 32 Microns),35 g/m2 ( 39 Microns),
Width : 100, 115 ,130 ,135 MM .
Length : 3000-4000M .