No 9 building, Tong fuyu Industrial District, Shenzhen, Guangdong, China,518109
As a leading munufacturer of secrrity devices, Portman has been dedicated to supplying audio systems. car alarms, and home security systems for over two decades. Established in 1983, beganas manufacturer sirens quickly built solid reputation based on the ...
car alarm, gps/gprs/gsm tracking system, home security system and related accessories