Global market research firm TrendForce's Green Energy Division LEDinside said that, with the decrease in LED price and the gradual improvement in LED efficacy, the cost recovery period has been shortened remarkably, greatly improving the intention of commercial and public departments worldwide to replace lights, formally launching the global replacement tide with LED lamps, and retrofit lamps like bulb and tube are most welcomed by market. LEDinside estimates that the global demand for LED bulb and LED tube will increase by 86% and 89% in 2014 respectively over 2013.