I'm working in electrical and have good knowledge about sales and marketing ,What you recommend to study Project management , or business management ?

Business Management is best opion for you to pursue your career.

recommend for  project management like others

thanks

better to go with business management, project management is easir than business and as u engineer and have sales knowledge

I would recommend for Project management

I would recommend for Project management as this field has lots of opportunities plus you can share your knowledge of sales and marketing in this field as well.