| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.39 | USD | 20251209 |
| Sinopec Shanghai Gaoqiao Petrochemical Company | China national standards | MT | 840.72 | USD | 20251209 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 908.54 | USD | 20251209 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.39 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.37 | USD | 20251209 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1052.66 | USD | 20251209 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 908.54 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1102.12 | USD | 20251209 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.39 | USD | 20251209 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 974.95 | USD | 20251209 |