Some plastics with bad ingredients will endanger people's health, because plastic poisoning is a slow process, toxic substances will slowly penetrate into human blood, and symptoms will soon appear, especially for children with weak resistance. Most of these cups are made of harmful plastics, which will smell after heating, and even the plastics will soften, and toxic chemicals will be eaten, which will have serious consequences for a long time.
These plastics contain a substance called polypropylene or polyvinyl chloride, which is toxic. There is also a toxic plasticizer added in the processing process, which will lead to poisoning death if eaten for a long time or in large quantities.