That is why branded still better, like Phillips and Osram, but have heard from some, even these do not last as long as branded normal bulbs. Probably they burn hotter so shorter lifespan. Normal as in 55/60w or 90/100w normal bulbsSeen a few in the websites but the problem is if it is credible (none of my frens used it before,so no feedback) secondly China products (doesn't last-led feed back was the little bulbs fails after a short period of time). That 's why I uses this forum check see any good recommendation and some actual feed back after use...hehehe.