| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1188.63 | USD | 20250729 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 979.47 | USD | 20250728 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 979.47 | USD | 20250728 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1175.37 | USD | 20250728 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 1175.37 | USD | 20250728 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 965.48 | USD | 20250728 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.47 | USD | 20250728 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.47 | USD | 20250728 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 979.47 | USD | 20250728 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1189.36 | USD | 20250728 |