| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.07 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.24 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.07 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.16 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.95 | USD | 20250909 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 352.07 | USD | 20250909 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 264.76 | USD | 20250909 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.85 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.05 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.97 | USD | 20250908 |