| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 508.14 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.11 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 635.17 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.87 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.94 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.6 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.72 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 507.96 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 627.89 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 628.03 | USD | 20251118 |