Use attention : 1. Preservation box from the freezer, don't immediately open, put 1 to 2 minutes at room temperature will open later as well. 2. Use it in the microwave, if the oil content in the food and the sugar content is more, in the case of a temperature rise sharply, will result in deformation of preservation box. So, it is best to heating the above food, a microwave oven dedicated box. 3. Carbonated soft drinks (carbonated drinks, cola, etc.) of bubble loss can make the sealing ability of preservation box, blister food or fermented food, hot food will make preservation box sealing performance degradation, please try to avoid this kind of food in the crisper. 4. Different food to save time is different, do not rely on preservation box sealing ability, to eat as well as soon as possible.