Changzhou Trotter Electricity Machinery Co.,Ltd is founded in 2006. The company consist of two parts. The Changzhou city Tongde Electric Appliance Equipment Co., LTD, is mainly for producing the electric bicycle hub motors which founded in 1999. The Changzhou Trotter Electricity Machinery Co.,Ltd focus on manufacturing electric bicycles and conversion kits. Current monthly capacity is around 3000pcs, more than 80% of them exported to EU and USA market. In 2010, the company ...