| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.95 | USD | 20250730 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.68 | USD | 20250729 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.85 | USD | 20250728 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.04 | USD | 20250727 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.04 | USD | 20250726 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.04 | USD | 20250725 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.17 | USD | 20250724 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 280.06 | USD | 20250723 |
| Henan Huiyihai Water Purification Materials Co., Ltd. | China national standards | MT | 279.88 | USD | 20250722 |