| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1336.9 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1336.9 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1301.53 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1301.53 | USD | 20251211 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1202.5 | USD | 20251211 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1202.5 | USD | 20251211 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 1046.88 | USD | 20251211 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 976.15 | USD | 20251211 |
| Nanjing Runsheng Petrochemical Co., Ltd. | China national standards | MT | 947.85 | USD | 20251211 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 919.56 | USD | 20251211 |