| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 869.15 | USD | 20251201 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 868.78 | USD | 20251130 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 868.78 | USD | 20251129 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.53 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.53 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 868.78 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.53 | USD | 20251128 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.64 | USD | 20251127 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.44 | USD | 20251126 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 840.44 | USD | 20251126 |