1).Bicycle frame:Be made of high strength steel or Aluminum according to customers� requirements. 2) Bicycle fork:Bs made of high strength steel according to customers� requirements. 3) Bicycle handle bars(Bicycle handles):Be made of high strength steel or Aluminum according to customers� requirements. 4) Bicycle stem(steel stem,alloy stem) :Be made of high strength steel or Aluminum according to customers� requirements. 5) Bicycle rims (alloy rims, steel rims, double rims):Be made of high strength steel or Aluminum according to customers� requirements with high precision. 6) Bicycle tires (bicycle tube butyl tube):Be made of high quality rubber, the tires are air-tightness, resist abrasion and aging. 7) Bicycle hubs:Be made of high strength steel or Aluminum according to customers� requirements. AXLE: S45C. 8) Bicycle spoke (Bicycle nippers):Be made of 45# steel according to customers� requirements; surface treatment： UCP ED. 9) Bicycle chainwheel&crank:Be made of high strength steel or Aluminum according to customers� requirements with high precision. 10) Bicycle freewheel:Be made of high strength steel according to customers� requirements with high precision. 11) Bicycle Derailleurs:Be made according to customers� requirements with high precision and accurate gear changing. 12) Bicycle chain:Be made according to customers� requirements with high precision. 13) Bicycle saddle:Be made according to customers� requirements with high quality leather. 14) Bicycle pedals:Be made of high strength steel，Aluminum or plastic according to customers�requirements. AXLE: S45C. 15) Bicycle brake:Be made of high strength steel，Aluminum or plastic according to customers�requirements. 16) Bicycle lock:Be made according to customers� requirements with high security. 17) Bicycle pump:Be made according to customers� requirements with high quality. 18) Bicycle helmets:Be constructed from EPS foam, meets safety standards. 19) Bicycle mudguard 20) Bicycle kickstand