An ordinary plastic pan can not be put in the microwave and oven, because the high temperature plastics will produce harmful substances. If you frequently use microwave cooking, the best selection of polycarbonate (pc) crisper materials; high temperature of around 70 degrees continuous sterilization washing, please do not exceed 20 to 30 minutes, ordinary fever site at the bottom of the dishwasher, the relative for the upper part by indirect heat transfer, and therefore on the upper dishwasher cleaning as well. Made of polypropylene plastic although the heat resistance temperature is also high, however, if prolonged heating, then the product will be deformed and elongated. Therefore, after cleaning, immediately use it, please look crisper into cold water re-use, which is a good way to prevent deformation. Besides glass crisper encounter when extreme cold and extreme heat may explode. 2, different food preservation time is different, do not rely solely on the sealing ability crisper, and should be consumed as soon as possible. pp (polypropylene) baking pan, when used in a microwave oven, can be heated for a short time, however, can not be used as a cooking vessel for use in the microwave. (Heated for a short time when thawing time not more than three minutes.) 3, when cleaning the pan, use a relatively soft sponge, do not use hard dishwashing cloth to avoid leaving scratches crisper color. When cleaning Silicon resin liner lid and the container, please do not use Supporter pull, otherwise it breaks or longer.