As a leading manufacturer of security devices, Portman has been dedicated to supplying GPS tracking systems, car alarms, and home security systems for over two decades. Established in 1983, Portman began as a manufacturer of sirens and quickly built a solid reputation based on the advanced design and exceptional reliability of its products. This successful beginning fueled a rapid expansion into the vehicle and home security systems markets.

In order to remain competitive, more than 50 highly qualified R&D engineers at Portman ensure its top position in the world-wide market place in terms of product development and design. Armed with most advanced professional hardware and software (CAD, PRO-E, PRO-TEL, in-circuit emulator, static electricity tester, etc), this elite group of talent is always ready to answer and satisfy customers＊ requests for OEM and ODM projects.

Portman, with the support of it highly valued customers, is becoming a name synonymous with quality and customer satisfaction. This is, in fact, the goal its entire staff is striving for.