... introductionThe contraction temperature and transmission speed are adjustable ,this machine uses conteacting PE,PVC,POF,PP to pack ... will be heated and contracted to enswathe the briquettes ,in this way,the briquette can be airproof ,damp proof ... can prevent the wood briquette from the exterior concussion in some extent!Different technical dataModel PE4535PE5050 PE6040Power 15kw17KW17KWTransmission ...