| Vendor | Spec | Unit | Price | Currency | Date |
| China national standards | MT | 422.21 | USD | 20251001 | |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 422.21 | USD | 20251001 |
| China national standards | MT | 295.55 | USD | 20251001 | |
| China national standards | MT | 365.91 | USD | 20250930 | |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.06 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.02 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.84 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 365.91 | USD | 20250930 |