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temperatures,it is rarely used in food packaging.Difficult to clean,easy residues,do not recycle.4-PE PECommon in plastic wrap,plastic film.Harmful substances produced when high temperatures,toxic substances enter the body with food,may cause breast cancer,birth defects and other diseases.5-PP polypropyleneCommon in milk bottles,yogurt bottles,microwave meal,high melting point 167℃,is the only place in microwave plastic,can be reused after careful cleaning.Note that some microwave food containers,box 5,PP to manufacture,but the lid was to manufacture 1 PET because PET can not withstand high temperatures,it can not be put in the microwave with the box body.6-PS polystyreneCommon in bowl of instant noodles boxes,snack.Not into the microwave oven,so as to avoid high temperature and release harmful chemicals.Avoid packaged snack foods hot,do not use a microwave oven to cook instant noodles bowl.7-PC polycarbonateCommon to kettle,space cup,bottle.Glass materials used in.