| Vendor | Spec | Unit | Price | Currency | Date |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.18 | USD | 20251021 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.08 | USD | 20251020 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.03 | USD | 20251015 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 169.0 | USD | 20251013 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.9 | USD | 20251010 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.77 | USD | 20251009 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.88 | USD | 20251008 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.8 | USD | 20250929 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.65 | USD | 20250926 |
| Guangzhou Longyu Chemical Co., Ltd. | China national standards | MT | 168.65 | USD | 20250926 |