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By certification 
Lined tote bag means packing in plastic. Plastic is a synthetic or natural polymer resin as the main material. A material that is ductile at temperature and pressure after the addition of various additives and can hold its shape when cooled.
The main characteristics of Lined tote bag are:
1. Small density, high specific strength, can obtain a higher packaging yield, that is, "unit mass of packaging volume or packaging area size.
2. Most plastics have good chemical resistance, good acid resistance, alkali resistance, resistance to all kinds of organic solvents, long-term placement, oxidation does not occur.
3. Easy forming, forming energy consumption is lower than steel and other metal materials.
4. It has good transparency and easy coloring.
5. It has good strength, high strength per unit weight, impact resistance and easy modification.
6. Low processing cost.
7. Excellent insulation.
http://www.dingbangplastic.com/
