... rate, and professional designed angle to maximize lighting reflection efficiency.4. Stainless steel fasteners.5. Ballast ... life, high energy-saving, maintenance cost free, high color rendering index lamp. Also ... With power factor over 0.98, low current harmonic and artificial intelligence light dimmer. ... , open-circuit, power cut-off, defective lamp, etc, ballast lifespan is ensured.12. Long lifespan: ...