| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1187.09 | USD | 20251021 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1120.82 | USD | 20251021 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1211.73 | USD | 20251020 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1211.73 | USD | 20251020 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1239.91 | USD | 20251020 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1169.46 | USD | 20251020 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1127.19 | USD | 20251020 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1127.19 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1120.14 | USD | 20251020 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1186.37 | USD | 20251020 |