... light: HF-SDD1001 MaterialStainless steel shell+ high quality chips Lamp Efficiency luminous efficiency≥90lm/W; Color rendering index Ra more ... under 40°C to 50°C Working lifemore than 50000 h Lamp holderGU10,E14,E27,E26,B22, Easy to install, widely ... moving Merits of lamp holderFlexible, dust-proof, anticreep, anti-corrosion, widely use AdvantageElegant ...