| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 900.5 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.79 | USD | 20250901 |
| Yancheng SUPER Chemical Technology Co., Ltd. | China national standards | MT | 925.82 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.5 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.79 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 767.28 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250830 |