| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 734.99 | USD | 20251207 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 727.93 | USD | 20251206 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 734.99 | USD | 20251206 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 727.93 | USD | 20251206 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 734.99 | USD | 20251206 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.88 | USD | 20251205 |
| Zhenghe Group Co., Ltd. | China national standards | MT | 932.88 | USD | 20251205 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.88 | USD | 20251205 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.88 | USD | 20251205 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 932.88 | USD | 20251205 |