It accords jetting principle to shrink the products. Save electric efficiently with reliable shrinking temperature and motor conveying speed and widely adjustable range. It has advanced design, stable function, good packing effect, good-looking appearance and easy operation. It can prolong the storage period. They suit for shrinking film of PVC, POF, PP etc. (Especially PVC) According to the conveying ways, it has two types: network belt, chain type.