What is the relationship between the number of pinholes in aluminum foil and represents a performance
The bag is a transparent film and opaque side film aluminum or aluminum foil, aluminum foil bag, packing bag is full of aluminum foil composite film made of opaque, its oxygen, moisture resistance, good sealing performance etc..
The bag is a transparent film and opaque side film aluminum or aluminum foil, aluminum foil bag, packing bag is full of aluminum foil composite film made of opaque, its oxygen, moisture resistance, good sealing performance etc..
The bag is a transparent film and opaque side film aluminum or aluminum foil, aluminum foil bag, packing bag is full of aluminum foil composite film made of opaque, its oxygen, moisture resistance, good sealing performance etc..