| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 973.93 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1256.23 | USD | 20251124 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 1072.73 | USD | 20251124 |
| Qilu Petrochemical Construction Co., Ltd. | China national standards | MT | 733.98 | USD | 20251124 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 733.69 | USD | 20251123 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 733.69 | USD | 20251123 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 804.23 | USD | 20251123 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 733.69 | USD | 20251122 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 733.69 | USD | 20251122 |
| Shandong Chambroad Petrochemicals Co., Ltd. | China national standards | MT | 733.69 | USD | 20251122 |