M'makampani opanga mankhwala, kufunikira kwa njira zopangira ma CD zomwe zimapereka chitetezo chokwanira ku chinyezi ndi mpweya wolowera ndizofunikira. Kuwonetsetsa kukhulupirika ndi mphamvu ya mankhwala okhudzidwa kumafuna zinthu zomwe zimatha kupereka zotchinga zosagwedezeka. Ma resins a EVOH (Ethylene Vinyl Alcohol) atuluka ngati osewera kwambiri pagawoli chifukwa chakutha kwawo kuteteza zinthu ku kuwonongeka kwa chilengedwe.