A lot of our led products did a lot of those UL(Underwriter Laboratories Inc) certification. What are collecting material in need of application of UL(Underwriter Laboratories Inc) certification?In this article, i used led lamp as an example.

* Module of production different list
*Product specification
*Product BOM list
*LED circuit principle diagram, screen print layout
*Transformer and inductive specification
*Electronic element of CDF
*the label for the marketed product.
*Component part of product