Composed of a bilayer or multi-layer structure, the outer layer is Kraft paper bag while the inner layer is aluminum foil bag，some others also with 

PE liner between paper and aluminum. This bag is highly durable, moisture-proof, puncture resistant, and has good light-blocking property. 

Suitable for high quality products and materials that cannot have moisture.

※Applicable to food use: Tea, Coffee beans, ground coffee, biotech material

※Applicable to industrial use: Engineering plastics, NYLON materials, TPU materials, biodegradable plastic materials