| Vendor | Spec | Unit | Price | Currency | Date |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1096.4 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1259.09 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1257.9 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 975.22 | USD | 20251210 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.82 | USD | 20251210 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1095.36 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1067.09 | USD | 20251210 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.95 | USD | 20251210 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.95 | USD | 20251210 |
| Xingtai Risun Coal Chemicais Limited | China national standards | MT | 1286.16 | USD | 20251210 |