| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.17 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.56 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.41 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.59 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.35 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.77 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.17 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.4 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.56 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.22 | USD | 20251110 |