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In order to improve ladder incapable to place on uneven surfaces, which accidents occur while using it, there is a retractable brace applied to the bottom of the ladder.
The ability to adjust its height to be even with ease makes users capable of working on uneven surfaces, thus reduce risks to occur during work.
Ming Chuan University
Taipei, Taiwan
Liang Siou-Ming,
Ming Chuan University
Chen Jyun-Yi,
Tunghai University
