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Wall fan is commonly used in developing countries and underdeveloped regions. But the two bracing wires of it looked the same. So it is difficult to know which one controls the sway of wall fan, which one controls the rotation rate, and the level of rotation. The Glancefan has a listing fixed on the bracing wires, which controls rotation rate. The length of this bracing wires changes by rotation rate. And the others length is constant. One of numbers on the listing will be pointed out by the bracing wires controlling the sway of wall fan. Then users can know the bracing wires controlling the rotation rate and the level of the rotation.
Tao / Du Yuemei / Zheng Xiaoyue / Tan zhiyu / Chen