Folding Bicycles Market By Folding Mechanism (Split Fold Mechanism, Triangular Hinge Mechanism, Break Away Mechanism), By Frame Material (Aluminum, Steel, Carbon Fiber and Titanium), By Wheel Size (16” to 19”, 20” to 24”, 25” and Above), By Number of Gears (Single Speed, Multi-speed) - Growth, Future Prospects, and Competitive Landscape, 2020 - 2028