| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1215.15 | USD | 20251209 |
| Befar Group Co., Ltd. | China national standards | MT | 890.17 | USD | 20251209 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1271.67 | USD | 20251209 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1031.47 | USD | 20251209 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1144.5 | USD | 20251209 |
| Dongying Huatai Fine Chemical Co., Ltd. | China national standards | MT | 1102.12 | USD | 20251209 |
| Shandong Jinling Chemical Ao.,ltd | China national standards | MT | 1102.12 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.59 | USD | 20251209 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1130.52 | USD | 20251208 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1130.52 | USD | 20251208 |