KOON mainly devote to the R&D，manufacture and sales of the Telephone remote management system of tourists emergency help phone，special telephone terminal and RFID. The production covered by Analogue / Fiber optic system and wireless GSM telephone system. Along with the development of the company ，KOON had setted up four subsidiary corporations : Guangzhou Da Vinci electronic Ltd,Shenzhen Chieftel technology Ltd, HongKong Litongxing tradek Ltd and HongKong Koon Technology(Shenzhen) Ltd .