half spiral energy saving lamp/ESL:
product details:
1.Low light wane,maintain over 80% luminous flux after 2000 hours continuous lighting
2.Life up to 8000 hours as the lamp tube with protected film and dual volute filament
3.Super high frequent work,high conversion efficiency and no interference.
4.high lumens,good light maintenance
5.application:marketplaces,hotels.facories.roads.etc.