APT专门生产按钮、指示灯等低压产品，是中国领先的低压控制部件制造商。APT系列产品通过多年的推广和应用，广泛服务于中国的电力、机械、钢铁、冶金、石化、交通、水处理、食品、包装、纺织、港口、建筑等几十个行业领域，先后被秦山核电站、三峡水电站、青藏铁路机车、神舟五号、上海浦东国际机场、国家体育场（“鸟巢” ）等国家级3重点工程所选用。

APT创立于1993年，是国内领先的低压控制电器品牌，品牌名称源于三个英文单词的首字母，Advanced(A)、Perfect(P)、Top(P)，寓意为：先进的、完美的、卓越的。 

2008年8月，西门子收购APT品牌和资产，APT成为西门子属下公司。 APT并入西门子后，继续集中力量研发和生产按钮、信号灯、转换开关、继电器、控制箱、电流互感器、限位开关及其他重要低压产品。同时，西门子将发挥其国际经验加强APT的品质管理和业务发展，依托先进的技术及研发资源，使APT品牌更好地服务中国客户。

The APT is 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.

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, current transformers, etc. With unified Quality Control and R&D Resource, APT will further strengthen its leader status in the local market and better meet the needs of its customers.