It’s perfectly correct to say that a company is 20 years old. I would only use “established” if you were also going to include other information.
My company was established 20 years ago by my father and my uncle.
21 de octubre de 2019
0
0
0
Thanks for your quick check, Steve.
20 de octubre de 2019
0
0
0
I’d say, “X was established 20 years ago.” Or perhaps better, “X was established in 1999.”
20 de octubre de 2019
0
0
0
I'm assuming "X" as my company.
20 de octubre de 2019
0
0
¿No has encontrado las respuestas?
¡Escribe tus preguntas y deja que los hablantes nativos te ayuden!