QRONTECH Co, Ltd. is developing and producing multimedia machine for car and selling them. We have many licenses and technology related to radio-frequency system and control method. Our laboratory collaborates on a national business with University and government. We can constantly accumulate and upgrade IT technology so that we have a full of ability to develope diverse products. We carry out total service such as customer response, production management, quality control and service after delivery so as to concentrate on expanding our business in global market. We make every efforts to give benefit to our partner in overseas. The main products are Navigation, DMB, Black box for car, Antenna and GPS module.. etc. We will produce reliable and excellent products to satisfy customers' needs. We always think customers as family. We expect your constant concerns and support.