| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.67 | USD | 20251205 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.88 | USD | 20251204 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.61 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.61 | USD | 20251203 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.09 | USD | 20251202 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.54 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.16 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.16 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.16 | USD | 20251129 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 911.16 | USD | 20251129 |