... indoor parking, office, classroom, workshop and indoor entertainment appication 2. Features:(1) Material: 1. Thicker die-casting aluminum electric ... , static plastic spraying and coating surface. 2. High temperature resistant PC lamp shade.(2) Electronic ballast:Rational distribution of every components ... life: Life up to 60,000-100,000 hours.(2) High energy efficiency: Luminous effeciency ≥65-85Lm/W, ...