| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| China national standards | MT | 354.86 | USD | 20251204 | |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 402.92 | USD | 20251204 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 395.74 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.6 | USD | 20251203 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.87 | USD | 20251203 |
| Suzhou Shangma Chemical Technology Co., Ltd. | China national standards | MT | 395.74 | USD | 20251203 |
| Jinan Jinrihe Chemical Co., Ltd. | China national standards | MT | 381.6 | USD | 20251203 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.6 | USD | 20251203 |
| China national standards | MT | 395.74 | USD | 20251203 |