http://www.lumanlighting.com/product_show_25.html

1.Energy saving rate>70%
2.5 year warranty/50000 hours lifetime (LED option:NICHIA/PHILIPS,and many   more...)；（Driver option:MEANWELL,and many more...)
3.High efficiency with up to 170lm/w product LUMEN，Be the Pioneer in the market.
4.Equipped with narrow beam angle lens (60o-90o),doubled the centre lux!
5.Weight is just about half of common LED high bay,save cost in delivery.