Our company is the biggest manufacture of lightbar and siren in China and has been certificated as a national high-tech corp. By now, the corp. has had more than 200 series of products, such as lightbar, siren, high-power antiaircraft siren, loud hailer, acoustic horn, police-used guard, traffic signal light, electronic equip for dutyclare, adjustable SCM goveernor for center air-condition, vehicle-used foglight and programmable controller etc.