Is wind power operation and maintenance better with two certificates or three certificates?

All three certificates are good. The minimum requirement for recruitment of wind power operation and maintenance positions is double certificates, but holding three certificates is preferred. Three certificates are good, including: aerial work certificate, high-voltage electrician certificate and low-voltage electrician certificate. Wind power operation and maintenance is mainly responsible for market development, customer maintenance and sales management in designated areas, dynamically grasping market prices, and regularly providing market analysis and forecast reports and personal work weekly reports to the company.