Established in 1998, DSW Audio & Security Co., Ltd. has specilized in manufacturing Piezo siren & Alarm, Electrical siren, Battery backup siren, Outdoor Siren, Home Alarm, strobe light, magnetic contacts, reed switches, Moled Speaker Box, Car Speaker, Loudspeaker and PIR sensor, motion detector sensor, control panel, Power supplier, CCTV power supplier as well as innovation electronic items in China. With over 10 years combined experience the DSW staff can offer you the support it needs for state of the art design and now there are 20 staff work for DSW including technicians and engineers. It is usually takes 30 days to develop a new design and develop 20-30 new model each year. Our annual investment in R&D accounts for 6.5% of sales. More than 30% raw material is imported from Japan and Korea...