| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 422.81 | USD | 20251022 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 408.72 | USD | 20251022 |
| China national standards | MT | 369.25 | USD | 20251022 | |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.25 | USD | 20251022 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.48 | USD | 20251022 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 366.43 | USD | 20251022 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.71 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.46 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |