What industry should I belong to if I am engaged in the sales of intelligent building equipment such as building automation and public broadcasting? Is it construction, electronics or something else?

What industry should I belong to if I am engaged in the sales of intelligent building equipment such as building automation and public broadcasting? Is it construction, electronics or something else? High score feedback

If it only deals with equipment sales, then it is the sales industry. If it also deals with system design, construction, debugging, etc., then it is the intelligent building engineering industry in the construction industry. The coverage of intelligent buildings is relatively wide, using a simple industry classification I'm afraid it's not very rigorous. Personally, I think it should be considered the construction engineering industry in a broad sense. Please correct me, thank you