The registration address of shenzhen city sung-jung electric technology ltd. Is located in shenzhen city, shenzhen city, on the street of yonggang city, shenzhen city, and is attended by a student from shenzhen city (yengang) who is registered as the shenzhen market supervisory authority and is represented by a legal person, mao shenghai. The activities include general operations such as the development and sale of integrated circuits; the development and sale of electronics software and hardware; the development and purchase of mechanical and electrical products, energy-efficient products and moulds; the development and sale of software and hardware for the internet (intelligence homes, smart buildings, agriculture, intelligent transport); and domestic trade. Production of teaching models and teaching aids; sale of teaching models and teaching aids; manufacture of teaching equipment; sale of teaching equipment; sale of teaching equipment; manufacture of optical equipment; sale of o...