| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | China national standards | MT | 1215.39 | USD | 20251201 |
| Shandong Junfeng | China national standards | MT | 1214.88 | USD | 20251128 |
| Shanxi Hengxin Chem | N220 | MT | 1214.88 | USD | 20251128 |
| Shandong Junfeng | N220 | MT | 988.85 | USD | 20251128 |
| Shandong Junfeng | N220 | MT | 988.99 | USD | 20251127 |
| Shandong Junfeng | China national standards | MT | 1215.05 | USD | 20251127 |
| Dongguan Canyu Chem | N220 | MT | 974.63 | USD | 20251126 |
| Shandong Junfeng | N220 | MT | 988.76 | USD | 20251126 |
| Shandong Junfeng | China national standards | MT | 1214.76 | USD | 20251126 |
| Shanxi Hengxin Chem | N220 | MT | 946.38 | USD | 20251126 |