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. Besides standard production, GridStone are flexible and
strong at custom design and production according to the
customers' specification. Expert training and technical support are
provided to serve the customers quickly and professionally. With GridStone products, the customers can cut electric costs
and reduce carbon output, have less equipment maintenance and
extend equipment life, no matter where their facility is located on
a utility line. GridStone factories are ISO9001 certified with strict quality
control procedure, and provide standard warranty 2 years (5 years,
extendable to 10 years for Australia and UK) .