When is the most busy electrical and mechanical engineering?

Project startup stage, project implementation stage, maintenance and troubleshooting stage.

1. Start-up stage of the project: it needs to design and plan the electrical system, which requires a lot of time and energy.

2. Project implementation stage: responsible for the installation, debugging and inspection of the electrical system, and need to pay close attention to and solve possible problems and challenges.

3. Maintenance and troubleshooting stage: regular overhaul, maintenance and update are needed to ensure the normal operation of the system.