ConvoyTech Security Technology has been designing and manufacturing conventional/addressable smoke, heat, gas and CO detectors for residential and commercial establishments for over 15 years. All of our products are made in China using components and plastics sourced from Taiwan and Japan. Our new state-of-the art factory with high capacity will open its doors in August 2008. To ensure efficiency, we test and calibrate every unit using advanced testing equipment, improving reliability and ...