1.16'' Children kids bicycle bike 2.ISO9000 and CE certificate. 3.For middle and high market. 4.Spray paint quality good. 16'' Children bicycle bike1. Rim Size: from 12" 16" 20"2. Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding3. Bike Fork: steel and painting, co2 welding steel /suspension fork4. Rim: 12" 16" 20" steel alloy or aluminum5. Kids bicycle Handlebar and stem: CP, ...