Major Brand: Edwards, Johnson Control, Notifer, Siemens, Thorn, Kidde, VESDA, Precept...
Major Brand: Tyco, Viking, Reliable, S.K. Chau Hung, Wah Hung, SRI, Weilong...
Major Brand: Anusl & Amerex.
Major Brand: Tyco and Kidde.
Major Brand: Gentex, Wheelock, Kobishi, KAC, Gent, a&b, C&S... .
Major Brand: Eversafe, SRI, Senje, NCF, Fireboy, Kiddie...
Major Brand: Icon, a&b, Crystalite...