In the tube,there are coating some protective film,It can reduce the light failure outlet during use it,in the same time,it can install the equipment...
This is Grace from Shanghai Great Alliance Exim Co.Ltd .
Our main products:LED LIGHTING, Ultraviolet sterilization lamp, ultraviolet disinfection lamp, ultraviolet lamp, infrared heating lamp, focusing heating lamp, sunshine simulation radiator...
You will be always welcomed to send your inquiry to us,we would like to quote you best price.

Your any reply will be much appreciated!

Best Regards
Grace

Shanghai Great Alliance Exim Co.,LTD
产品名称：Instant UV Lamps
产品手机链接：http://m.vooec.com/product_222060868.html
产品网站链接：http://www.vooec.com/cpshow_222060868/