GridStone Electric Co.Ltd.

Founded in 1983, GridStone Electric specialize in auto voltage optimizers and transformers. As the first manufacturer of auto voltage optimizers in China, GridStone have installed tens of thousands installations later. The products range cover servo motor voltage optimizer, SCR control voltage optimizer, IGBT control frequency and voltage optimizer, LV and HV transformer and reactor. Thanks to over 30 years in the business and on going technical research, GridStone have become a competitive high-tech company, and meet the requirements of a constantly growing number of customers through design, production and service. GridStone brand name is started for all AVR and Transformers to be used in global market.