... the ISO 9001-2008 quality standard 3.Durable colorful desgin lady bike:CH-70Size:12" 14" 16" 18" 20" 22" 24"Package ... /carton) Specification :children bicycle,children bike,childs bicycle/bike,boys bike bmx bike,baby bikerim size: 12”,16”,20"bike frame: steel and paiting,thicker ... % SKD 1pc/carton:12” 1750pcs; 14” 1570 pcs; 16” 1225pcs lady children bike