Polite staff, competent specialists, the availability of rare components. I really liked the approach, even to a retail client, they picked up what they needed, discharged it, and left satisfied with the spare parts, although on the Internet, competitors had huge delivery times for the same part, so to speak.
Responsible staff and management create really amazing devices from scratch, all the electronics of a new sample, i.e. if you order something, do not wait for Soviet spare parts