How to get an IMMEX program
Who can hold a program, the export commitment, what goes in the file and the fifteen-business-day rule — with the article numbers.
Independent editorial resource
Mexico Manufacturing for US Buyers
An independent resource for US procurement sourcing in Mexico: how IMMEX affects you, how to qualify a supplier, RFQs, and USMCA origin.
Sourcing from Mexico can lower cost and shorten supply chains — but the savings are real only if you qualify suppliers properly, run RFQs that price in the cross-border reality, and understand how IMMEX and USMCA actually work. This section is built for the buyer's decisions, not as a directory.
Editorial note: ammex.org.mx is an independent resource operated by Heberey LLC. It does not represent or affiliate with AMMEX, Index Metropolitana, INDEX Nacional, any authority, or prior operators of the domain.
Guides for the buying decision
IMMEX for US buyers
What IMMEX is, why it affects your cost and risk, and what "we have IMMEX" does and does not guarantee.
Qualify an IMMEX supplier
A structured checklist to tell a supplier that can actually take a US order from one that cannot — before you commit.
Mexico supplier RFQ checklist
What to put in an RFQ to a Mexican manufacturer so quotes are comparable and the cross-border reality is priced in.
USMCA rules of origin
How a product qualifies for preferential treatment under USMCA, and why IMMEX efficiency does not guarantee origin.
USMCA certificate of origin
The nine minimum data elements a certification must carry, who can sign it, and why there is no official form.
Supplier OEA / AEO status
What a Mexican supplier's OEA certification signals, and how mutual recognition with C-TPAT works.