Ordinary plastic plastic lunch boxes cannot be put into microwave ovens and ovens, because plastics will produce substances harmful to the human body at high temperatures. If you often use a microwave oven for cooking, it is best to use a plastic lunch box made of polycarbonate (PC); if you use a high temperature of about 70 degrees for continuous sterilization and washing, please do not exceed 20 to 30 minutes. The high-heat part of the ordinary dishwasher is at the bottom. In other words, the upper part is subject to indirect heat transfer, so it is better to place it in the upper part of the dishwasher.
Although plastic products made of polypropylene have a high heat resistance temperature, if they are heated for a long time, the products will be deformed and elongated. 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. In addition, the tempered glass plastic lunch box may explode when it encounters extreme cold and extreme heat.