идеально одной скорости велосипед выбеге / велосипед номинальная

Lang Ri Optronics is a company specialized in designing, developing, manufacturing and marketing bicycles’ parts. With several years of hard work, we have become one of the largest companies here in this field. Today, we have more than 500 workers. We attained ISO9001 Quality Management System Certification. We are trying to establish a world famous brand “LangRi” by professional teams, scientific management, and modern and advanced equipment. Now,Our productions have coveredmore than 30 countrieswith high reputation. We look for cooperating with more companies. Details:Product:single speed bicycle freewheel Brand:ShanyingMaterial:steelStandard:16t 18t 20t 22tFinish:black,browmQty:120pcs/ctnN.W. 18KGG.W. 18.5KGPacking: 29*22*17