| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.46 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.45 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.88 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.69 | USD | 20251117 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.4 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.64 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.82 | USD | 20251115 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.82 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.64 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.4 | USD | 20251114 |