| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1116.39 | USD | 20251208 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1116.88 | USD | 20251204 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1116.47 | USD | 20251201 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1115.99 | USD | 20251128 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1115.88 | USD | 20251126 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1115.41 | USD | 20251125 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1115.08 | USD | 20251124 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1114.64 | USD | 20251121 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1115.57 | USD | 20251117 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1114.8 | USD | 20251113 |