| Window at its original close position (with Enko safety devices hidden) | Open window with Enko safety devices | Pre-empting the window from falling with Enko safety devices |
| 窗户在它原来关闭的位置(暗藏着精制安阁双重安全钢链装置) | 装置安阁双重安全钢链敞开的窗户 | 确保装置安阁双重安全钢链的窗户不掉落 |
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以下是安阁双重安全钢链的质量测试报告及认证录像。