We use this to check which calls you are allowed to apply for. It is the one answer nothing works without.
What does your company actually do? Write it the way you would say it to a colleague. Separate different things with commas. Your own language is fine — but English words find more calls today, so add a few if you can.
A Hungarian energy company wrote: erőmű, transzformátor, napelem, power plant, energy, electricity — their own words first, then the English ones.
Pick every area that fits. Nothing is chosen for you.