| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.19 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 407.44 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 452.71 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 452.71 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 407.44 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 403.19 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.81 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 407.05 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 452.28 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 452.15 | USD | 20251209 |