| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1200.12 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1214.24 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.95 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.71 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.88 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.36 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1199.77 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1178.6 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1213.88 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.9 | USD | 20251121 |