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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 41175-2021 |
Assistive products for persons with vision impairments and persons with vision and hearing impairments -- Acoustic and tactile signals for pedestrian traffic lights 视力障碍者和视听障碍者用辅助器具? 行人交通信号灯的声音和触觉信号 |
China National Standards impairments |
 English PDF |
| GB/T 35784-2017 |
Audio visual equipments—Methods for the subjective assessment of small impairments in audio systems 视听设备 音频系统小损伤的主观评价方法 |
China National Standards impairments |
English PDF |
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