pattern for trivision billboard
Trivision billboard is a common form of outdoor advertising, with the progress of technology, its flip mode has changed three. So what are the common patterns?
1, quick change: all prisms flip at the same time (for small areas).
2, closing ceremony: from the two sides turn to the middle of the junction (need to use two or more motors).
3, wavy: turn from side to side.
4, opening ceremony: turn from the middle to the side (need to use two or more motors).Last one：Advantages of steel structure engineering
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