APTFounded in 1993, APT is a leading brand of low-voltage control appliances in China, the brand name is derived from the first letters of three English words, Advanced (A), Perfect (P), Top (P), meaning as: advanced, perfect, excellent, in August 2008, Siemens acquired APT brand and assets, APT became a subsidiary of Siemens. After APT was integrated into Siemens, it continued to focus on the development and production of buttons, signal lights, transfer switches, relays, control boxes, current transformers, limit switches and other important low-voltage products. At the same time, Siemens will leverage its international experience to strengthen APT's quality management and business development, and rely on advanced technology and R&D resources to make the APT brand better serve Chinese customers.