Sono Ltd is pravate company with limited liability registered at the end of of 2004 year. It is an successor and natural result of the progressive development of Sole Trader " Sono - Ivan Yankulov" which has been active since 1993. The firm represents a modern micro-buisiness establishment with a flexible structure and high-qualified personnel.

For about five years our main activity was maintaining and repairing bank, office, and home electronic equipment. As a result of the gained experience, we found that the basic cause damaging the contemporary electronics is the peaks, which occur in all the telecommunication cable and mains power supply networks.

That’s why we, Sono S. B. Co., stared developing and adopting surge protection devices in 1998, world known as “surge protectors”. By our products, we hope to give up to our customers the more safety and calmer environment, which is a necessity to normal business and home activities.