... materials6.Thermal resistant tempered glass7.IP Rating: IP65 Applications: high pole lamp, billboards, buildings, parks, plazas, tennis courts, railway ... >80(Ra)4. High lumen efficiency: 80Lm/W, constant light flux, lumen maintenance rate after 2000 hours>95% 5. ... all kinds of requirements7. No flick, no glare: comfortable light for eyesight protection8. Mercury content is less than 5mg ( ...