Shenzhen Anvox Alarm Systems Co., Ltd has been dedicating to supply alarm & security and automatic control products internationally, professional production of sound and light alarm, waterproof sound and light alarm, intelligent sound and light alarm, anti-shear-line sound and light alarm, power failure alarm sound and light alarm, flashing lights, strobe, etc., waterproof strobe, police numbers, treble alarm, high-decibel alarm, security fire accessories manufacturer