TradeVerify OLT Co., Ltd., a professional manufacturer of distribution transformer since 2003, having its research and development center, through innovative and endless efforts in development, has successfully developed SPCS(Smart Power or Voltage Controlling System) which is an On-Load TAP Changer offering for world best plus/minus 0.25% in output voltage stability.Due to SPCS technology, OLT has contributed to innovatively enhance quality of power by developing Smart Energy Saving System(Esaver-R, Esaver-T), Smart Constant Voltage Transformer(SSVR-T) and Smart Step Voltage Regulating System(SSVR-R). The SPCS technology which is core of Greenpower IT, Smartgrid and Energy saving which is 9.6% to 103% based on the square of I(Current) times R(Resistance) in formula of power consumption-loss by reducing lots of power-loss in the electrical facilities. Owing to the SPCS, by controlling voltage instantaneously and proactively, by providing voltage constantly and safely, both the optimized high quality and high efficient use of power have been come true.Our products are best for our customer&＃39;s growth, and for both growth and properity of green industry by both making efficiency of industrial appliances maximized and innovatively saving energy.