| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 845.39 | USD | 20251020 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 845.39 | USD | 20251020 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 817.49 | USD | 20251018 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 817.49 | USD | 20251018 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 817.49 | USD | 20251017 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 817.49 | USD | 20251017 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 817.27 | USD | 20251016 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 817.27 | USD | 20251016 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 816.96 | USD | 20251015 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 816.96 | USD | 20251015 |