As a distinctive feature of UL products, all products must be UL UL column name, approval or Classification Mark. Classification Mark is rare in China, the vast majority of the column name, recognition products. Column names, including L type approval mark column names, logos and R Class column recognized the name recognition signs. L class UL Listing Mark is printed in the United States (in tab form) and released. It is generally more stringent control. Marks the composition is divided into four parts:
· UL registration patterns.
· "LISTED" word, all caps.
· UL's (Control No.) ISSUE NO XXXXX.
* Name of the product.
There may be some other signs, but these four are essential. Different types and L, R Class Listing Mark for color printing directly from the factory, stickers, molding, printing and other forms directly on the product label (L products to the UL label must be purchased).
L class is accredited by the UL mark printing and distribution in the United States, mainly composed of three parts. L type approval mark only used in wires and components. Its components are divided into:
---- Pattern recognition mark
---- Control Number Issue No
---- Product Name
      R logo recognition products can be "approved parts list" in the provisions of the "product mark" to identify. Generally include facility identification signs, type the product model number or recognized. R logo recognition products do not have to appear in the product.