Source:|Author:hkwc8057e|Published time: 2019-10-11|1774 Views|🔊 Click to read aloud❚❚▶|Share:
Recently we encountered these situations in the market. The laces are often loosened. The shoelace is too long to be trampled. The shoelaces don't look good or won't tie.
Leading to the design of automatic laces and magnetic shoelaces