| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251129 |
| Shandong Jinshengrun Chemical Co., Ltd. | China national standards | MT | 974.73 | USD | 20251129 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 875.84 | USD | 20251129 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1243.13 | USD | 20251129 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 875.84 | USD | 20251129 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1052.42 | USD | 20251129 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 889.97 | USD | 20251129 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 875.84 | USD | 20251129 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 974.73 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.12 | USD | 20251129 |