features Of LED High Bay Luminaires 1. Top brand LED chips(Bridgelux) from USA. the chips efficiency is 130lm/W and the lighting fixture efficiency is up to 90lm/W 2. Top brand LED driver from Taiwan Meanwell, it is HLG series, it is much more stable than CLG series. 3. Big heat sink to ensure good heat dissipation. The diameter is up to 264mm while most heat sink in the market is below 250mm.it ensure the heat sink will dissipate from both vertical and horizontal directions 4. We offer 5 years warranty based on high quality 5. Large projects experience, our clients include many TOP 500 companies such as Toyota , Bosch and HK airport. We are free member here and can't upload more pictures here. If you have any interests, pls contact me as below Email : Meghan@szelover.com Tel: +86 18617096055 whatsapp/wechat/facebook:+86 18617096055 We promise good quality and best service and factory price. we are looking for a longterm relationship and if you want a reliable supplier , then we can be a parter.