Instruction:
1. Hot isothermal: Put all foods or beverages in boxes then seal up the cover for long time, taking food for each time, it will seal up the cover immediately, avoid to the quantity of heat will be lost.
2. Cold storage: As the air to the obscene, therefore should be given all kinds of food or beverages put in Box then ice piece or ice source (the proposed use of specialized ice source) covered under the food, it will be able to achieve the best results. Taking food for each time, it will seal up the cover immediately, avoid to the couls air will be lost.