Changzhou Qualisports Technology Co., Ltd. Located in Changzhou City, Jiangsu Province, one hour hi-speed train from Shanghai and Nanjing. We are professional manufacturer and supplier of electric bikes, electric bike conversion kits and electric scooters. We are established in 1996 with over than 20 years experience in electric bicycle industry. We also have our own motor factory and vehicle factory with professional develop team, veteran technician team and sales-service team. So we can control quality and cost very well to assure our advantages in such competitive circumstance. We own two brands: "powerbike" and "qualisports". Our registered brand "powerbike" is for production and "qualisports" is for overseas market. "qualisports" sources from quality and sports. We are determined to produce and sell high quality products. The original motivation is to provide our customers all over the world with innovative high quality personal transportation devices and serviceswith the best cost-performance ratio. "qualisports" will be a leading brand in the global market for personal transportation devices and components. We welcome all independent designers joining us. When you have a design, we can help you to bring it to reality.