Established in year 1999, Duoyi Instrument has more than twenty years history in manufacturing test equipment to provide a fresh, cost effective option to worldwide market.

Being a active player in market, we are now offering various products covers automotive, power, HVAC and consuming , four sectors in general, targeting to provide comprehensive solutions in automotive after market, power and HVAC maintenance, as well as household sensing. Our insulation tester and earth resistance meter have market share 20%-30% in China market. In automotive sector, the figure is up to 90%. We are proven as an competitive part and place in industry all over the world.