mountain bike manufacturers selling kdlk20-inch folding bike 6-speed lightweight shock absorption variable speed folding mountain bike

material carbon steel car frame structure folding car processing customization yes brand cadillac folding or not yes propulsion mode chain model kdlk load 150kg pedal type bilateral folding pedal brake system double v brake frame type hard frame front fork type spring fork (low-end no damping) brake type front and rear wheel v brake configuration grade mini type color white black size 20 inches wheel rim size 20-inch (long-distance riding) time period 8 seconds net weight 15kg