| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1130.69 | USD | 20251210 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1130.37 | USD | 20251209 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1130.37 | USD | 20251209 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1158.63 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1247.65 | USD | 20251209 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.67 | USD | 20251209 |
| Shandong Mingyu Supply Chain Management Co., Ltd. | China national standards | MT | 1130.52 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1247.81 | USD | 20251208 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1130.52 | USD | 20251208 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.83 | USD | 20251208 |