| Vendor | Spec | Unit | Price | Currency | Date |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 971.08 | USD | 20250930 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 999.23 | USD | 20250930 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 997.86 | USD | 20250928 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1096.24 | USD | 20250928 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 969.75 | USD | 20250928 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 1096.24 | USD | 20250928 |
| Baozhen Chemical (Shandong) Co., Ltd. | China national standards | MT | 969.75 | USD | 20250928 |