| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.96 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.38 | USD | 20250904 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 830.38 | USD | 20250904 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 844.45 | USD | 20250904 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 802.23 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.12 | USD | 20250904 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.75 | USD | 20250904 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1097.79 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.77 | USD | 20250903 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.35 | USD | 20250903 |