snack boxes are made of waste plastics

In China, the most of snack boxs are made of waste plastics. In a factory in guangdong, we saw the whole process. Molten the waste plastic, add talcum powder and fluorescent whitening agent which are carcinogens, after cool, the waste plastic became some white plastics snack boxs without disinfecting.
A company staff said, the most of the foam tablewares ( LookChem) which domestic sale are made of garbage. But the snack boxes for exporting are added a little.
So, do you still dare to use fast-food?