1.  Rim Size: from 12"---20"
2.  Bike Frame: steel and painting, thicker argon-arc welding/CO2 welding
3.  Bike Fork: steel and painting, co2 welding steel /suspension fork
4.  Rim: 12"--20" steel alloy or aluminum
5.  Handlebar and stem: CP, argon-arc welding Φ22X0.8-1.2mm
6.  Tyre: 12"x1.75, 16"x1.75, 20x1.75 or 1.95 2.125 air tires or EVA tire
7.  Chain wheel & crank: 12"24T×89/1628T×102/20"28T×127 CP/ED
8.  Crank: CP or ED or UCP
9.  Brake: F/R Caliper Brake or R band brake
10.  Freewheel: 16T/18T/20T Brown/Black/CP
11.  Mudguard: steel, painting or CP
12.  Chain: full chain or 9-form chain cover
13.  Pedal: plastic, with reflector, without ball, PP/TPE/ALLOY
14.  Saddle: good leather, common or spring /plastic/imitation leather/ plate PVC TOP
15.  Grips: PVC/TPR/RUBBER FOAM
16.  B.Bparts:3pcs B.B axle B.B cup
17.  Paint: 3X/4X painting
18.  Color: red, black, blue, green, yellow etc. any color you like
19.  Attachments: bag, helmet, flag, the covers of the wheels, training wheels
20.  Packing: export standard packing    SKD/CKD/AB    85%SKD/50%SKD 1PCS/CTN or 4PCS/CTN