Stupid Companies: mechanical and electrical equipment, machinery and equipment sales, engineering and technical services; development of LED \ LCD electronic display, splicing screen, touch inquiry system, lighting, lighting engineering, street lighting, green energy and other electronic products, sales, engineering and services; security monitoring, smart home, information dissemination and system integration; development of computer application technology, software development; multimedia audio and video conferencing systems, lighting and sound systems sales and engineering services; self-and agent all kinds of goods and technology import and export business;