| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.63 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 635.69 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.55 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.72 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.63 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.5 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.57 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.3 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 635.36 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.29 | USD | 20251125 |