| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.74 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.58 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.67 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.51 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.99 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.88 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.88 | USD | 20250930 |