| Vendor | Spec | Unit | Price | Currency | Date |
| Zhenghe Group Co., Ltd. | China national standards | MT | 932.74 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 734.89 | USD | 20251201 |
| Derun Chemical Co., Ltd. | China national standards | MT | 1116.47 | USD | 20251201 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.89 | USD | 20251201 |
| Jinan Jiaxing Chemical Co., Ltd. | China national standards | MT | 890.35 | USD | 20251201 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.89 | USD | 20251201 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.89 | USD | 20251201 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.89 | USD | 20251201 |
| Shandong Dongming Petroche Mical Group Co., Ltd. | China national standards | MT | 787.18 | USD | 20251201 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.74 | USD | 20251201 |