1:Non-waterproof Flexible LED Strip: PCB (Printed Circuit Board) material with self-adhesive back.
2:Waterproof Flexible LED Strip--Surface Injection: Except it PCB material is encapsulated with plastic Gel at surface, with self-adhesive back, Water resistant coat (IP65).
3:Waterproof Flexible LED Strip--Silicone Tube: The PCB is enveloped by silicone tube, and with two ends sealed by gel. Without self-adhesive back. Water resistant coat (IP67).
4:Waterproof Flexible LED Strip--Whole Injection: Except it PCB material is encapsulated with plastic Gel at both side. Without self-adhesive back. Water resistant coat (IP68).

The energy efficiency, flexible design, and high intensity of LED strip lighting make it optimal for these indoor home and commercial lighting situations:

• Kitchen cabinet, under cabinet, and shelf lighting
• Exhibits, presentations, and project lighting
• Close application task lighting
• Cove and interior accent lighting
• Shop windows, window displays, and display case lights
• Light boxes, interior sign and signage light

http://www.cytaclight.com