... has such characteristics as good anti-static function,excellent vacuum pump effect,high transparence,low air (oxygen) transmission, ... to pack hardware,electronic components, and product requires vacuum packing.Its size,material,functions such as high-temperature ... ASTM D 882>151bsAppearanceNo delamination,burst sealwrinkle,warp,break,foreign particleadherence,air bubble beyond sealingø≤3mmQualified