1. Environmental protection non-toxic, the use of environmentally friendly materials, heat sealing will not produce toxic and harmful gases; 2. Tight sealing, good sealing performance, and a wide range of welding sealing, low temperature and good welding performance; 3. Sealing packing, dust and moisture barrier, unique oxygen layer, due to the high density of blow air, no moisture, good barrier properties, and is not easy to dust; 4. Number of micro holes: full version 40400 each square meter (36 holes each square inch), It has anti-fog effect, good air permeability, to ensure the freshness of fruits and vegetables and display performance.