| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.01 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.01 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.97 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.13 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.01 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 271.72 | USD | 20250908 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 351.97 | USD | 20250908 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 271.59 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.83 | USD | 20250906 |