| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1113.77 | USD | 20251021 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1113.1 | USD | 20251020 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1113.48 | USD | 20251017 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1113.18 | USD | 20251016 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1112.75 | USD | 20251015 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1112.35 | USD | 20251014 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1112.57 | USD | 20251013 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1111.92 | USD | 20251011 |