Polypropylene-05 PP (temperature tolerance above 100 degrees) such as: microwave oven recommended: put the microwave oven, remove the lid for use: the only plastic box can be put into the microwave oven, can be carefully cleaned after reuse. It is important to note that some microwave ovens are indeed made of 5PP, but the lid is made of No. 1 PE, which cannot be placed in the microwave oven with the box body because PE cannot withstand high temperature. To be on the safe side, remove the lid before putting the container in the microwave oven.