HANGZHOU YANHUAKE TRANSMISSION CO.LTD was built in year 1998,Website:http://www.drivingchains.com, it has a superior geographical position as it is located in the economic and technological zone of Xiaoshan district,Hangzhou,and next to Xiaoshan International Airport.It is a modern joint-stock enterprise with research,manufacture,and trade in chain industry.It is a member of National Chain Drive Standardization Technical Committee, and China National Chain Industry Association.