| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.61 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.64 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.48 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.55 | USD | 20250827 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.58 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.07 | USD | 20250827 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 284.07 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.11 | USD | 20250826 |