Tupperware car-mounted heating lunch box is safe. According to relevant information, Tupperware car-mounted heating lunch boxes are all made of plastic, which is high-purity plastic. Don't worry about toxicity, heating is stress-free. Car-mounted heating lunch boxes are all low power 12V 200 W, which is very safe. Tupperware is one of the largest manufacturers of plastic fresh-keeping containers in the world, and its products are made of pure food safety plastics.