"Take Dimming" feature lamps and "without dimming" function lamp, consider how many customers spread to stimulating the market demand, "with dimming" function BP lamp growth?
"with dimming" function lamp and "without dimming" function lamp, how much price difference the customer thinks can pull the market "with dimming" function BP lamp demand growth?
"With dimming" and "without dimming" function lamps, how much price difference do customers think can drive the market demand growth of "with dimming" BP lamps?