| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.6 | USD | 20251030 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1340.99 | USD | 20251029 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1339.35 | USD | 20251021 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1338.54 | USD | 20251020 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1338.12 | USD | 20251015 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1337.9 | USD | 20251013 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1337.12 | USD | 20251010 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1336.11 | USD | 20251009 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1336.99 | USD | 20251008 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 1336.35 | USD | 20250929 |