In addition to the above two points, it is a general summary, that is, don’t choose wholesale lunch boxes The color is too bright, because it may contain lead, chromium or other heavy metals exceeding the standard. Choose the one that does not have too many decorative patterns and is colorless and tasteless. \ u0026emsp; \ u0026emsp; 1. According to whether the lunch box is put in a microwave oven or an oven for heat treatment when it is used, when wholesale lunch boxes, it is necessary to choose a lunch box of better quality and heat-resistant material.
\ u0026emsp; \ u0026emsp; \ u0026emsp; \ u0026emsp; ^ It is better to choose a plastic lunch box made of polycarbonate (PC); if you use a high temperature of about 70 degrees for continuous cake packaging boxes suppliers sterilization and washing, please do not exceed 20-30 minutes. The high-heat part of the ordinary dishwasher is at the bottom Relatively speaking, the upper part is subject to indirect heat transfer.
Although plastic products made of polypropylene have a high heat resistance temperature, if they are heated for a long time, the product will be deformed and stretched. Therefore, if you want to use it immediately after cleaning, please soak the plastic lunch box in cold water before using it. This is a good way to prevent deformation. \ u0026emsp; \ u0026emsp; \ u0026emsp; \ u0026emsp; 2. If the wholesale lunch boxes are mainly for keeping food for a long time, then when the lunch boxes are wholesale, you plastic transparent box can choose PP (polypropylene) lunch boxes.
\ u0026emsp; \ u0026emsp; \ u0026emsp; \ u0026emsp; In addition to the above two points, it is a rough summary, that is, wholesale lunch boxes should not choose too bright colors, because there may be excessive lead, chromium or other heavy metals. Just choose the one that does not have many decorative patterns and is colorless and tasteless.
\ u0026emsp; \ u0026emsp; \ u0026emsp; \ u0026emsp; If you are going to wholesale online, you should pay attention to whether you go to Sanwu products, and you must buy certified products, and see if there is a national certification label. Ensure the eligibility and safety of the lunch box. For porcelain used in microwave ovens, avoid metal decorative products, otherwise it is unsafe to use.
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