Many plastic products contain certain toxicity, especially those tableware made of plastic. Once the quality is unqualified, it is harmful to people's health.

Generally speaking, all plastic products (such as sugar cans, food boxes, food bags, chopsticks, cups, bowls, etc. ) Non-toxic plastics are required for food or tableware. And PVC, electric jade, bakelite and other plastics have certain toxicity and are generally not used in food.

Extended data:

Book cover packaging method:

1, use the textbook to crease the book cover, cut a few knives and fold it in the middle.

2. Press out the side.

3. Cut off four corners.

4. Insert the right side under the cover.

5, processing the corners according to law.

6. It's wrapped.