For those lunchboxes that hold hot food, people use heat-resistant materials to make them. For cooler foods, there is no need to use a heat-resistant lunch box to pack, so the heat resistance of the lunch box is very low. Now the content of science and technology has improved, in the production of tableware packing materials above is also under a lot of thought, so the materials used are more high-end, it is difficult to produce some toxic substances, or the release of toxic gases.

Most of the lunch box is some quality assurance mark, the lunch box is not the merchant to produce and then use, it is one of the production of the lunch box to buy lunch boxes, and then used for their own catering on the place. Merchants often want to improve their restaurant's reputation in various ways, especially by opening a variety of software, on which the ordering information is open. Therefore, when purchasing lunchboxes, businessmen will usually choose lunchboxes that have the mark of conformity and are made of healthy materials. And not to choose that some counterfeit, and the use of material is not clean, and even the use of colorful lunch box manufacturers.

After people continue to test and examine the situation, has really found a very successful preservation of meals in the lunch box, that is, the use of polypropylene (PP) made of transparent material lunch box. When people use such a lunch box, it allows the whole food to reach the person who buys the food safely, and it also has a certain heat preservation effect, and its main function is that it can prevent leakage. However, it has been tested that when it comes to fats and oils, this kind of lunch box can easily react with the fats and oils and then be dissolved.

Until now, people still have no way to really find a suitable packing lunch box, but the lunch box after the meal high temperature hot is not released toxic substances, people can rest assured to eat with these lunch boxes packaged food, or to go to the restaurant to dine.