| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1211.81 | USD | 20251016 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1169.54 | USD | 20251016 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1127.27 | USD | 20251016 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1127.27 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1120.22 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1186.45 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1092.04 | USD | 20251016 |
| Hangjin Technology Co., Ltd. | China national standards | MT | 1014.54 | USD | 20251016 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1186.0 | USD | 20251015 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1119.8 | USD | 20251015 |