frame:steel frame,co2welding               

Fork:steel and painting,Argon-arc Welding   

Handlebar: steelCP                      

Tyre/Tube: airtube                    

Rim:  steelCP                         

Pedal: without ball,plastic,with reflector

Mudguard:steelpainting                  

Saddle: common,leather                  

Crank:CP                      

Attachments:trainingwheel