When I describe the scope o business activity of the company, which tense should I use?
We (the company) are building hotels and commercial centers.
We (the company) build hotels and commercial centers.
Use the simple present to describe the overall scope of the company's activity and the present continuous for particular examples.
'We build hotels and commercial centres (BE spelling) all over Europe. At the moment we are building two five-star hotels in Nice and a retail park in Frankfurt.
A better title would have been We build/are building hotels.
'Thread titles should include all or part of the word/phrase being discussed.'