| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.75 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.17 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.11 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.64 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.64 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.05 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.99 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.47 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.13 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.53 | USD | 20251113 |