| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 819.8 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1109.56 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1116.62 | USD | 20251205 |
| Zibo Jinshuo Chemical Co., Ltd. | China national standards | MT | 848.07 | USD | 20251205 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 890.47 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.76 | USD | 20251205 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 805.67 | USD | 20251205 |
| Beijing Yanshan Petrol-Chemical Industry Co., Ltd. | China national standards | MT | 975.28 | USD | 20251205 |
| Lihuayi Weiyuan Chemical Co., Ltd. | China national standards | MT | 862.2 | USD | 20251205 |
| Jinan Angxin Chemical Co., Ltd. | China national standards | MT | 918.74 | USD | 20251205 |