| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1196.22 | USD | 20250925 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 942.9 | USD | 20250925 |
| Shandong Yuhuang Chemical Co., Ltd. | China national standards | MT | 1287.7 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1329.92 | USD | 20250925 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1294.74 | USD | 20250925 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1294.74 | USD | 20250925 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1294.74 | USD | 20250925 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 1013.27 | USD | 20250925 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 971.05 | USD | 20250925 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 971.05 | USD | 20250925 |