Andover (US) founded in 1979 by Doctor Dick Morley who invented PLC, It specialize in research, development and produce of the building automatic control system. The products of Andover company are running in over 4000 constructions in the world. Its sale is the No.1 in US market.

PELCO is the world's largest Close-circuit Television Monitoring System mannufacturer. It has an extensive customer base, selling its more than 4500 finished products through a network of dealers throughout the US and in over 130 countries.

Edward EST-3 Fire Alarm System. The Edward is the largest producer of fire products in the United States. The Edward's products keep in the first position all along in the industry. And they hold 30% of US high market and 60% of Canadian market.