| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chem | China national standards | MT | 1266.62 | USD | 20250930 |
| Shandong Henrui Chem | China national standards | MT | 1083.67 | USD | 20250930 |
| Shandong Henrui Chem | China national standards | MT | 1083.67 | USD | 20250930 |
| Sinopec | China national standards | MT | 1083.67 | USD | 20250930 |
| Shandong Henrui Chem | Polycarbonate Grade | MT | 1083.67 | USD | 20250930 |
| Shandong Tongzhou Chem | China national standards | MT | 1407.36 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1083.67 | USD | 20250930 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1083.15 | USD | 20250929 |
| Shandong Daoqin Chem | China national standards | MT | 1266.02 | USD | 20250929 |
| Lihuayi Weiyuan Chem | China national standards | MT | 1083.15 | USD | 20250929 |