First, if you have a home based business (a studio on your property)
forget it (unless they have changed their criteria in the last 5 years).
They won’t accept it for inclusion.
Anyone who has a manufacturing, wholesale, or retail business, with an
address other than a P.O. Box or a home address, is welcome to apply for
membership. What they are looking for is an address they can verify as a
legitimate business. They will also want a list of your suppliers and
others you do business with on a regular basis. This is how their coding
system is formulated. They will want to see your taxes for 2 or 3 years
to verify income level. Plus there are other qualifications that they will
mention when you call for an application for membership. They are not as
strict as you might think, but they are very thorough. They expect you to
be honest with them.
Their address is:
Providence, Rhode Island
They have offices in Los Angeles, Chicago, and New York as well.