| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1200.01 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.83 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1214.12 | USD | 20251112 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1242.36 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1094.12 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1188.71 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 1122.36 | USD | 20251112 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1129.42 | USD | 20251112 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1129.42 | USD | 20251112 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 1171.77 | USD | 20251112 |