| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250905 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.3 | USD | 20250905 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.37 | USD | 20250905 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 464.21 | USD | 20250902 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.01 | USD | 20250902 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 633.01 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 450.14 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.13 | USD | 20250902 |