In fact, in daily life, we are in contact with fresh-keeping boxes, packaging boxes, plastic bags, food bags, and plastic cups. We must go and observe carefully. If the product used is transparent and transparent, it can be used with confidence, because basically it is made of polypropylene and Polyethylene raw materials are processed and formed without adding any additives or additives during the process; if you find that your lunch box is of other colors, especially milky white, please do not use it because the masterbatch raw materials are added during the processing Or toner, milky white, add a large amount of filling masterbatch to reduce costs.