| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 930.88 | USD | 20251105 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1283.48 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1064.87 | USD | 20251105 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 930.88 | USD | 20251105 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 733.42 | USD | 20251105 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 733.42 | USD | 20251105 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 729.19 | USD | 20251105 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1114.23 | USD | 20251105 |
| Shandong Changyi Petrochemical Co., Ltd. | China national standards | MT | 740.47 | USD | 20251105 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 803.94 | USD | 20251105 |