Can the fresh-keeping box packed in the hotel be used as a lunch box?

Many people often change their lunch boxes into fresh-keeping boxes brought back from hotels, but I didn't know that this would affect the health of diners. Therefore, if ordinary fresh-keeping boxes are used as lunch boxes and heated by microwave or oven, the decomposition of plastic materials at high temperature will produce harmful substances with great toxins and even carcinogenic factors, and the fresh-keeping boxes will also expand due to air heating, which will lead to the decline of inherent sealing performance and affect the preservation and storage of food when it is taken for the second time. According to incomplete statistics, when fresh-keeping boxes are not used properly instead of lunch boxes, the symptoms such as vomiting, stomach acid and excretion dysfunction are the most obvious, represented by students and young people. The truly environmentally-friendly lunch boxes represented by the lunch box king have been upgraded in an all-round way. The raw materials are all completely non-toxic imported PP materials. Although the cost of raw materials is higher than that of ordinary fresh-keeping boxes, such high cost is absolutely safe.