| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 407.05 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.81 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 424.01 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 424.01 | USD | 20251210 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 424.01 | USD | 20251210 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 452.28 | USD | 20251210 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251210 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 325.07 | USD | 20251210 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 443.8 | USD | 20251210 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 339.21 | USD | 20251210 |