... bags can be made of different material to suit for package of different products.Certificates are available upon customers requests: ... gusset or irregular shaped bagsPrinting colors 1-10 colors for you chose Material PET , BOPP , CPP , LDPE ,VMPET , VMCPP , Aluminum foil , Papertwo ... PE,BOPP/VNPET/CPP, PET/ Aluminum foil/LDPE,BOPP/ Aluminum foil/CPP, BOPP/ Aluminum foil/LDPE PET/VNPET/CPP,BOPP/VMPET/PE ...