| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 325.17 | USD | 20251204 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.96 | USD | 20251204 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.72 | USD | 20251204 |
| China national standards | MT | 409.99 | USD | 20251204 | |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.85 | USD | 20251204 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.96 | USD | 20251204 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.96 | USD | 20251204 |
| Jia'en Chemical (Shandong) Co., Ltd. | China national standards | MT | 402.92 | USD | 20251204 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 325.17 | USD | 20251204 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 367.58 | USD | 20251204 |