The most professional manufacture in Aisa The exclusive supplier for all Metro Project in China Our company is mainly devoted to the R&D, manufacture and sale of Telephone remote management systems of tourists emergency help phones, special telephone terminals and RFID. Our production covers Analogue/Fiber optic systems and wireless GSM telephone systems. Along with the development of our company, we have set up four subsidiary corporations: Guangzhou Da Vinci Electronic Ltd., Shenzhen Chieftel Technology Ltd., Hong Kong Litongxing Trade Ltd. and Hong Kong Koon Technology (Shenzhen) Ltd.
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