INTRODUCTION Distributed light source:150W-400W high pressure sodium lamp Rated voltage and frequency:220V±10%/50Hz Installation tube size:￠48mm Installation height:6-12m    Founded in early 1980's,Jiangsu Yaoshi lamps Co.,Ltd.,which was originally named Danyang Hongxing iluminate Plant, and beaten by the elements in the market,however,has been growing up and currently transformed into a stock-holding medium-and-large corporation with good credit standing at home and abroad.