| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 805.15 | USD | 20251202 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.53 | USD | 20251202 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| China National Petroleum Corporation Lanzhou Petrochemical Branch | China national standards | MT | 847.53 | USD | 20251202 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.53 | USD | 20251202 |
| SINOPEC Qingdao Petrochemical Co., Ltd. | China national standards | MT | 1094.73 | USD | 20251202 |
| Zhenghe Group Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |