We do UL register our products, can't get the approval witout a UL stamp on 
the board.

Our notes:

MATERIAL SHALL BE IN ACCORDANCE WITH IPC-.... FLAMMABILITY RATING: UL 
94V-0.

BOARD FABRICATOR SHALL APPLY DATE CODE, FABRICATOR'S I.D. AND UL 
MARKING WHERE INDICATED.  MARKING SHALL BE COPPER ETCHED.  (or silk 
when needed)

An interesting side benefit:  We had a vendor trying to get our business, went 
all the way to the sample stage, when I found a different company's UL mark 
on the boards.  Yup, they brokered out the samples.

Peter

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