| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 847.15 | USD | 20251125 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 847.15 | USD | 20251125 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.9 | USD | 20251124 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.9 | USD | 20251124 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.56 | USD | 20251123 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.56 | USD | 20251122 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.56 | USD | 20251122 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.56 | USD | 20251121 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.56 | USD | 20251121 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.6 | USD | 20251119 |