| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.68 | USD | 20251106 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.25 | USD | 20251105 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.25 | USD | 20251105 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.44 | USD | 20251104 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.44 | USD | 20251104 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.66 | USD | 20251103 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.66 | USD | 20251103 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.5 | USD | 20251102 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 846.5 | USD | 20251102 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 846.5 | USD | 20251101 |