| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1136.25 | USD | 20250821 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 876.74 | USD | 20250821 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 883.75 | USD | 20250821 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 981.95 | USD | 20250821 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 813.61 | USD | 20250821 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 882.55 | USD | 20250820 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 882.55 | USD | 20250820 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 980.61 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.71 | USD | 20250820 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.66 | USD | 20250820 |