| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Refining&Chemical Co., Ltd. | China national standards | MT | 1248.22 | USD | 20251105 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 884.33 | USD | 20251105 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 882.92 | USD | 20251105 |
| Shandong Yuanhe Xinsheng Chemical Trade Co., Ltd. | China national standards | MT | 1057.81 | USD | 20251105 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 884.33 | USD | 20251105 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 884.33 | USD | 20251105 |
| China Petroleum and Chemical Co., Ltd., QILU Branch | China national standards | MT | 888.56 | USD | 20251105 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 1297.58 | USD | 20251105 |
| Wanhua Chemical Group Co., Ltd. | China national standards | MT | 916.77 | USD | 20251105 |
| Lihuayi Group Co., Ltd. | China national standards | MT | 884.33 | USD | 20251105 |