Nanjing Kangni mechanical and electrical co., Ltd. China rail vehicle door system localization research and manufacturing base, is a national high-tech enterprise, national "high-tech industrialization demonstration project" unit.2007 early founders were granted national development and Reform Commission "made in urban rail transit advanced individual".

Kangni company to strive to advance the process of China's modernization of rail transit equipment as their responsibility, through original innovation, integrated innovation and the introduction of the digestion and absorption of innovations, improve the capability of independent innovation of the enterprises in China's historical and cultural ancient city--Nanjing, established domestic first-class rail transit equipment manufacturing base for research and development.

, Connie provides main products to China and the world market including mainline trains, urban rail vehicle door systems, door systems for mass transit vehicle interiors, subway platform safety door (PSD) and other products.

relying on advantages of provincial level technology center and Engineering Research Center, the company has established a perfect system for technological innovation, and has a large number of talents in the industry. the company adhere to the aim and are committed to mastering the international forefront of rail transit equipment and technology, and constantly develop products that meet user needs. the company manufacture trains of electrically controlled pneumatic plug doors on the plateau, urban rail vehicles electric double open doors, urban rail vehicles outside closed doors, and the wide range of products both at home and abroad customers. the company has become the world's leading vehicle suppliers France class a supplier of Alstom, Siemens and Bombardier companies preferred supplier in China.

, Connie "build first-class enterprise, the international brand" as the goal, through the relentless efforts of all staff, as people in China and around the world to provide a safe and comfortable modern rail transportation equipment.