The plastic lunch box can be heated in a microwave oven, but only the No. 5 plastic polypropylene (PP) can be used in the microwave oven. Plastic lunch boxes are safe for food, but...
The number "7" represents the material of the plastic except for PVC or polystyrene or a composite material of various plastic materials. More common in kettles, cups, bottles. Hig...
The number "6" indicates that the material of the plastic is PS. More common in bowls of instant noodles, fast food boxes. It is also heat-resistant and cold-resistant, but it cann...
The number "5" indicates that the plastic is made of PP. High temperature resistance, more common in microwave lunch boxes. It can be reused after careful cleaning. Need special at...
The number "4" indicates that the plastic is made of LDPE. Typical products are cling film, plastic film, and the like. The heat resistance is not strong. Generally, the qualified ...
The number "2" indicates that the plastic is made of HDPE, which is commonly used as a bottle for cleaning products and shower products. Not for food packaging. The number "3" indi...
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