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The creative use of lines, tracks, springs, axles and other structures. The single
umbrella becomes the double umbrella, and increase umbrella space. Simplified
structure design, and expand direct action is not complicated. It is small size,
easy to carry and storage.
When the sun and rain can increase the shelter,people can avoid being the sun and rain.
Storage will not cause the whole of the long, add half the storage space.
Kaohsiung City, Taiwan