Established in 1996, Guangzhou Hengcheng Chelv Auto Accessories Co. , Ltd. (also known as Guangzhou Kingtop Electronic Technology Co. , Ltd. ), Is a leading manufacturer of car electronic security systems in Guangzhou, Mainland China. Backed by over 10 years R&D, Production and marketing experience in car electronics field, And with a professional team of engineers and technicians, We have established a solid reputation for innovation and quality among customers and end users in and out of China. We are elected as best supplier of many 4S shops in China, And our brand Karleader receives wide recognition domestically and at overseas. Besides, We are also an OEM/ ODM supplier for valued overseas buyers, Dedicating to help build their brands and improve their brand recognition by offering high quality products and integrated service.