They were punctual, my appointment was scheduled for 09:30, they were here 15 min before the time

They were punctual, my appointment was scheduled for 09:30, they were here 15 min before the time. They don't talk much, but that is a good thing since installation takes time. Their work was clean, and they clean up after working, it's as if they were not even here. The level of professionalism 10/10. I was impressed.