| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1006.68 | USD | 20250721 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 831.91 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 964.74 | USD | 20250721 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.62 | USD | 20250721 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1083.58 | USD | 20250721 |
| China Petroleum and Chemical Corporation Jingmen Branch | China national standards | MT | 1090.57 | USD | 20250721 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1090.57 | USD | 20250721 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 811.21 | USD | 20250719 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 811.21 | USD | 20250718 |
| Shandong Mengkangda Chemical Co., Ltd. | China national standards | MT | 853.17 | USD | 20250718 |