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(1) The chair legs incorporate a special feature that brings the chair to an elegant halt anywhere in the house when it runs into people's feet or furniture.
(2)With these modified wheels, home life becomes safer and more comfortable for young children and aged elders.
National Taipei University of Technology
Taipei, Taiwan
Ming-Chin Yang
kuo, tsu-jung
Chiayi County, Taiwan
Tsu-Jung Kuo