... 5 , B=40/20 , C=0.01 Flat-convex led optical lens 1),Material: Monocrystal line silicon N shape.2),Resistivity: 5 ... 5 , B=40/20 , C=0.01 7),Specification: In accordance with the drawing, you can provide us your drawing ... , then we will design the drawing and customize this lens for you.8),Output: 100K/month 9),Pictures10) Main ... information, welcome to visit: www.shhxgd.com Flat-convex led optical lens