| http://www.w3.org/ns/prov#value | - When the microwave-proof layer and the air-impermeable packing material is laminated and used on one side of the oxygen absorber packet and the air-permeable packing material is used on the other side of the packet, combinations such as the following can be listed as the laminated material of the air-permeable packing material: laminated and bound layers of porous polyester film, porous polyethyle
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