| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 393.78 | USD | 20250922 |
| China national standards | MT | 421.91 | USD | 20250922 | |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 421.91 | USD | 20250922 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 365.65 | USD | 20250922 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 344.56 | USD | 20250922 |
| China national standards | MT | 295.24 | USD | 20250921 | |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 421.77 | USD | 20250921 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 344.45 | USD | 20250921 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 407.72 | USD | 20250920 |