| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.93 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.93 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.33 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 902.93 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.28 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.54 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.48 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.14 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.41 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.76 | USD | 20251029 |