| Vendor | Spec | Unit | Price | Currency | Date |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 1173.1 | USD | 20251210 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 918.69 | USD | 20251210 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 989.36 | USD | 20251210 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1060.03 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.69 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1109.49 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1116.56 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1116.56 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1102.43 | USD | 20251210 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 932.82 | USD | 20251210 |