| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1068.1 | USD | 20251211 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 933.71 | USD | 20251211 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 735.65 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 976.15 | USD | 20251211 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 735.65 | USD | 20251211 |
| Derun Chemical Co., Ltd. | China national standards | MT | 933.71 | USD | 20251211 |
| Huizhou Jincheng Petrochemical Equipment Engineering Co., Ltd. | China national standards | MT | 877.12 | USD | 20251211 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 735.65 | USD | 20251211 |