| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.67 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 777.4 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 777.4 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 777.4 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 777.4 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 777.4 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.85 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 805.85 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | Industrial Grade | MT | 805.61 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 805.61 | USD | 20251203 |