Our Cleaners are trained by professional trainers and practiced for 2 month before we sent them out to any bank. All cleaners have good knowledge of cleaning chemicals and good eye of details. When cleaning banks especially, we always pay special attentions to window glass, glass doors to make sure they have been cleaned to spotless. Metal railing etc. been polished as well. We will also double check the cleanliness of the floor make sure there is no debris left on the floor.