Reliable. Upon inquiry, Nanjing Kairong Technology is a real-name registered and legally protected formal company, which is very reliable. Nanjing, referred to as "Ning", was called Jinling and Jiankang in ancient times. It is the capital, sub-provincial city and mega-city of Jiangsu Province, the core city of Nanjing metropolitan area, an important central city in eastern China, an important national research and education base and a comprehensive transportation hub approved by the State Council.