| Vendor | Spec | Unit | Price | Currency | Date |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1408.03 | USD | 20251014 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1408.31 | USD | 20251013 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 971.74 | USD | 20251013 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 971.17 | USD | 20251010 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1407.5 | USD | 20251010 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1337.12 | USD | 20251010 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1406.43 | USD | 20251009 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1406.69 | USD | 20250929 |
| Zibo Zhongsheng Chemical Co., Ltd. | China national standards | MT | 1209.09 | USD | 20250919 |