A truss consists of straight members connected at joints. Trusses are composed of triangles because of the structural stability of that shape and design. A triangle is the simplest geometric figure that will not change shape when the lengths of the sides are fixed. In comparison, both the angles and the lengths of a four-sided figure must be fixed for it to retain its shape. Usually truss manufacturers hold the trade show of truss once a year. People will show their products at the exhibit booths with their logo floor mats. The trade show displays a important role in promoting sales of truss and bring mutual benefit between those manufacturers and customers.
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