| Vendor | Spec | Unit | Price | Currency | Date |
| Dongguan Canyu Chemical Co., Ltd. | N220 | MT | 1054.73 | USD | 20250827 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 983.31 | USD | 20250826 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1208.07 | USD | 20250826 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 983.68 | USD | 20250825 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1208.53 | USD | 20250825 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 983.68 | USD | 20250825 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1208.53 | USD | 20250825 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1205.82 | USD | 20250822 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 981.48 | USD | 20250822 |
| Shandong Junfeng New Materials Co., Ltd. | N220 | MT | 981.95 | USD | 20250821 |