... .Packing material:PE,POF,PVC,PP 3.Easy to use Charcoal briquette Packing machine introductionThe contraction temperature and transmission speed are ... uses conteacting PE,PVC,POF,PP to pack the wood /charcoal briquette ,you need to send it into the packing machine ... packing machine will be heated and contracted to enswathe the briquettes ,in this way,the briquette can be airproof ,damp proof ...