Planning, maintenance and maintenance of industrial and civil electromechanical integration facilities and equipment;

Installation, debugging, programming, maintenance and maintenance of industrial and civil elevators;

Industrial and civil infrastructure design, decoration, welding, hydropower transformation;

Planning, maintenance and maintenance of medical, packaging, logistics and express delivery facilities and equipment;

Hotel, catering property infrastructure renovation, facilities and equipment maintenance, maintenance, repair;

Energy saving, environmental protection, design, construction and renovation of refrigeration, heating and high energy consumption facilities and equipment;

Design, construction, maintenance and maintenance of fire protection, electric power, HVAC, air conditioning, air intake and exhaust, water supply and drainage;

Design, construction, maintenance and maintenance of monitoring, broadcasting, audio and electronic equipment;

Wholesale, retail, processing and manufacturing of catering, hotel and electromechanical integration equipment parts;