Model：CH-1604, CH-1631
| File Name | Date of Update |
|---|---|
| CH-1604 and CH-1631 DECLARATION OF CONFORMITY (410KB) | 04/01/2026 |
| Version | Updated contents | Updated on |
|---|---|---|
| 5rd Edition | --- | Apr. 1, 2026 |
| 4rd Edition | --- | Mar. 24, 2023 |
| 3nd Edition | --- | Nov. 23, 2021 |
| 2st Edition | --- | Sept. 19, 2019 |
| 1st Edition | --- | June. 28, 2017 |
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