Agalma Sourcing

Contract assembly and box build companies in León, Mexico

Plants that assemble finished products from your parts and subassemblies: box build, electromechanical assembly, kitting, and packout. Profiles say whether they buy the parts (turnkey) or use yours (consigned). We list 109 contract assembly manufacturers in the León area. 4 have researched profiles with capabilities quoted from their own websites, and 31 are confirmed to take outside orders.

Describe your part to rank these suppliers for your job:

Top 30 of 109

Researched profiles first, then by size · Updated October 15, 2026

  1. Minebea Accesolutions Mexico

    Silao de la Victoria, Guanajuato·251+ employees·Job shop

    • ✓Final assembly and box build
    • ~Electromechanical assembly

    “Ensamble”

    minebea-accesssolutions.com.mxTakes outside ordersProfile →
  2. Voltava

    Silao de la Victoria, Guanajuato·101–250 employees·Contract manufacturer

    • ✓Final assembly and box build

    “complex module assembly, sequencing and related value-added services”

    voltava.comTakes outside ordersProfile →
  3. EG Automation

    León, Guanajuato·11–30 employees·Job shop

    • ✓Electromechanical assembly

    “Perform hands on electrical wiring, panel assembly, mechanical adjustments and troubleshooting for automation equipment.”

    eg-automation.comTakes outside ordersProfile →
  4. IKA Distribuidor y Automatizacion

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ✓Electromechanical assembly

    “In our workshop, we carry out the machining, assembly, wiring, and labeling of the components that make up the panel.”

    ika.technologyTakes outside ordersProfile →
  5. Arneses Electricos Automotrices

    Silao de la Victoria, Guanajuato·251+ employees·Contract manufacturer

    • ~Electromechanical assembly
    condumex.comTakes outside ordersProfile →
  6. Serviacero Orbis

    León, Guanajuato·251+ employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    serviacero.comTakes outside ordersProfile →
  7. Industrias Noramex

    León, Guanajuato·101–250 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    • ✓AS9100
    noramex.comTakes outside ordersProfile →
  8. Freudenberg Filtration Technologies

    Silao de la Victoria, Guanajuato·101–250 employees·Contract manufacturer

    • ~Electromechanical assembly
    freudenberg-filter.comTakes outside ordersProfile →
  9. Play Club

    Silao de la Victoria, Guanajuato·101–250 employees·Job shop

    • ~Final assembly and box build
    playclub.com.mxTakes outside ordersProfile →
  10. Sistemas Mecatronicos Intica

    Silao de la Victoria, Guanajuato·101–250 employees·Contract manufacturer

    • ~Final assembly and box build
    • ~Electromechanical assembly
    intica-systems.comTakes outside ordersProfile →
  11. Empresa de Anuncios Publicitarios Grupo Vision

    León, Guanajuato·101–250 employees·Job shop

    • ~Final assembly and box build
    gvision.com.mxTakes outside ordersProfile →
  12. AY M Ring de Mexico

    León, Guanajuato·101–250 employees·Contract manufacturer

    • ~Final assembly and box build
    ring-mexico.squarespace.comTakes outside ordersProfile →
  13. Bend WCM

    León, Guanajuato·51–100 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    bendwcm.comTakes outside ordersProfile →
  14. Protooling MX

    León, Guanajuato·51–100 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    • ✓ISO 9001
    protooling.mxTakes outside ordersProfile →
  15. Madiver Ingenieria y Automatizacion

    León, Guanajuato·51–100 employees·Job shop

    • ~Final assembly and box build
    • ✓ISO 9001
    grupomadiver.comTakes outside ordersProfile →
  16. Industrias Medina

    León, Guanajuato·51–100 employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    medinabombas.com.mxTakes outside ordersProfile →
  17. H-J Mexico

    León, Guanajuato·51–100 employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    h-j.comTakes outside ordersProfile →
  18. GT Steel

    León, Guanajuato·51–100 employees·Job shop

    • ~Electromechanical assembly
    • ✓ISO 9001
    gtsteel.com.mxTakes outside ordersProfile →
  19. Carrocerias Llamas

    León, Guanajuato·31–50 employees·Job shop

    • ~Final assembly and box build
    llamas.com.mxTakes outside ordersProfile →
  20. Maseri de Leon

    León, Guanajuato·31–50 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    maseri.com.mxTakes outside ordersProfile →
  21. Campers y Carrocerias Lider

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    campersycarroceriaslider.comTakes outside ordersProfile →
  22. Trazo Digital

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    trazo-digital.comTakes outside ordersProfile →
  23. Bombas Sumergibles Otorga

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    bombasotorga.comTakes outside ordersProfile →
  24. Fabricacion de Maquinas para Calzado STS Industrias Scalini

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    scalini.mxTakes outside ordersProfile →
  25. Grupo Remace

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    gruporemace.comTakes outside ordersProfile →
  26. Mexico MS Mold

    Silao de la Victoria, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    msgroup.co.jpTakes outside ordersProfile →
  27. Grupo Giga

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    grupogiga.com.mxTakes outside ordersProfile →
  28. Samu Mexico

    Silao de la Victoria, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    samucorp.comTakes outside ordersProfile →
  29. Fabrica Ryse

    Silao de la Victoria, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    cocinasryse.comTakes outside ordersProfile →
  30. Moldes de Aluminio Fademol

    León, Guanajuato·11–30 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    fademol.com.mxTakes outside ordersProfile →

79 more. Search to see suppliers ranked for your part