stand up ziplock packaging bag with bottom gusset 1)Certificate:QS,ISO9001 2)Material:customized 3)Moisture proof 1, Material: BOPP/VMCPP, PET/AL/PE, BOPP/VMPET/PE,PA/RCPP,PET/CPP etc2,Great to prevent leakage, suitable for individual packaging.3, High temperature resistance,moisture oxygen barrier4,Easy to tear open.option with valve or tin tie5,Up to 10 colors6,Various colors, sizes and designs ...