| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.35 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.35 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.29 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 332.09 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.55 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 332.16 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.43 | USD | 20251205 |