Most companies own automated machinery and equipment, giving rise to the electromechanical installation industry. Installation of equipment, lines, pipelines, substations of 35kV and below, and production and installation of non-standard steel components are usually industrial, public, and civil construction projects. Electromechanical installation engineering is a large-scale project. Some large companies relocate, and a single project can take nearly half a year. Moreover, compared to the technical requirements for installation, the requirements are also very high. The project includes industrial boilers, ventilation and air conditioning, refrigeration, electrical equipment, instrumentation, motors, compressor units, broadcasting, film, television, and broadcast control equipment.