General Knowledge
| NO. | Subject | Date |
|---|---|---|
| 1 | What are polymers/plastics? Learn about their differences, types, and environmental impacts! | 2025-06-05 |
| 2 | Are you still foolishly using ordinary PE plastic bags to pack hot food? | 2025-04-08 |
| 3 | Is PC plastic toxic? | 2023-09-07 |
