... proof,leak-proof,airtight,craft paper+PE+Aluminium,varnishing paper packing case 1.high grade craft paper+coated paper, moisture-proof, good airtight. ... bbm lid, plastic lid+Aluminium foil peel off membrane, paper lid, etc. 4.easy to carry,easy to recycle, ... non-toistic, environment friendly,etc.We choose composite cans for various reason:Durability-Protects fragile snacksExtended shelf life - preserves ...