... 3.certificate: CE, RoHS, 4.lifespan:>40,000h LED bulb lightFeature: 1) Self designed and developed advanced ... SourceEpistar chip (normal) / Cree chip (for choosing)LED Qty10pcs Work EnvironmentIndoor use (applicable for dry environment)Replacement40- ... , museum, library, super markets, kitchen, corridor, display, backlight, home indoor lighting, and building decorative lighting projects, and so on ...