The APT was established in 1993. It is now a Chinese leading manufacturer of low-voltage control devices. After being integration into Siemens in August, 2008, APT will focus on manufacturing push buttons, pilot devices as well as other key low-voltage products, such as stack lights, cam switches, limit switches, current transformers, etc. With Siemens’ profound international experiences and advanced technologies, APT will further improve its management and businesses and better satisfy the needs of local and global markets.