According to LEDinside, a research division of TrendForce, sales revenues of public listed LED manufacturers in Taiwan totaled NT$7.347 billion(MoM-9.22%，YoY+18.1%) in February, 2011. Sales revenues of upstream chip manufacturers reached NT$3.471 billion(MoM-7.9%; YoY+23%) in February, 2011, up 23% compared to the same month of 2010. As for Taiwanese downstream LED package manufacturers, suffering from fewer working days in February, sales revenues reached NT$3.876 billion(MoM-10.3%，YoY+14%) , down 9.22% on month, but up 18.1% compared to the same month of 2010.