Short answer
DENUE lists 82 seating and interior trim plants with 11 or more staff in Aguascalientes, Guanajuato, Querétaro and San Luis Potosí. 65 have 51 or more staff, and 41 of those match an IMMEX program on exact name and postal code. Guanajuato has the most, with 37. Each plant still needs its own checks.
Key facts
- Activity codes (SCIAN)
- 336360
- Plants, 11+ staff
- 82
- Data
- INEGI DENUE bulk files, 25 Sep 2026; IMMEX directory, August 2026 edition
About seating and interior trim
Seating and trim plants cut, sew, mould and assemble interior parts. Most run in large plants close to vehicle assembly.
The numbers by state
| State | Plants, 11+ staff | With 51+ staff | With an IMMEX match |
|---|---|---|---|
| Guanajuato | 37 | 29 | 15 |
| Querétaro | 21 | 16 | 13 |
| Aguascalientes | 15 | 11 | 9 |
| San Luis Potosí | 9 | 9 | 7 |
| Four states | 82 | 65 | 44 |
| Staff band | Plants |
|---|---|
| 11 to 30 | 10 |
| 31 to 50 | 7 |
| 51 to 100 | 7 |
| 101 to 250 | 15 |
| 251 or more | 43 |
What to ask a seating and trim supplier
Registries show that a plant exists and exports. These questions cover what they cannot.
- Material sourcing for foam, fabric, leather or vinyl.
- Flammability and durability testing to the destination market’s rules.
- Sequenced delivery capability, if the customer builds to sequence.
- Cut-and-sew versus moulded capacity.
- Customers already served from the same plant.
Checks before you approach a plant
- Confirm the plant in DENUEName, address, activity code and staff band.
- Check its IMMEX programStatus and type, matched on legal name and postal code.
- Search the SAT 69-B listBy RFC where you have it, otherwise by exact name.
The verification guide explains each step and where it stops.
Frequently asked questions
How many seating and interior trim plants are in the Bajío?
INEGI’s DENUE lists 82 seating and interior trim plants with 11 or more staff across Aguascalientes, Guanajuato, Querétaro and San Luis Potosí. 65 of them have 51 or more staff. Testigo counted these from INEGI’s bulk files on 25 September 2026.
Which Bajío state has the most seating and interior trim plants?
Among the four states Testigo counted, Guanajuato has the most seating and interior trim plants in DENUE, with 37 of 82, followed by Querétaro (21). Plants elsewhere in Mexico are outside Testigo’s pilot, and counts are establishments in INEGI’s directory as of 25 September 2026.
Do seating and interior trim plants in the Bajío export under IMMEX?
Some do. 44 of the 82 plants match an IMMEX program on exact name and postal code, and 41 of the 65 with 51 or more staff. A plant with no match may still export through a shelter company’s program, so ask which entity holds it.