... specs, can satisfy requirements of different industries and win high reputation from clienteles.2. PVC free style expansion ... industry: halftone printing, computer lettering, ad scutcheon, exhibition board, remark board; industrial application: antisepsis project, thermal moulding parts, boards ... free style expansion boards: item, unit, result, surface density, g/cm3 0.5-0.8, tensile strength, MPa ...