| 摘要 |
The device has a base leg (1) with two side legs (2,3) movably arranged at the edges, whereby the two side legs and the base leg have a reflective surface, and two pairs of stands (4a,4b). The base leg has joint arrangements (5a,5b) formed on its ends for the pairs of stands, whereby the joints are directly joined to the ends of the base leg.
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