By this letter, the construction company "Vysota-31" expresses gratitude to the "Technology of light" company. During our collaboration, your company has established itself as a reliable and responsible partner. "Vysota 31" would like to highlight the high quality of RADUGA professional equipment provided by "Technology of light". Your employees are responsible, creative, pleasant to work with, and professionals in their field. We wish your team success and look forward to mutually beneficial cooperation and fruitful collaboration in the future.