Agalma Sourcing

Contract assembly and box build companies in Frontera, 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 16 contract assembly manufacturers in Frontera. 2 have researched profiles with capabilities quoted from their own websites, and 5 are confirmed to take outside orders.

Describe your part to rank these suppliers for your job:

Top 16 of 16

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

  1. Promotora de Manufacturas

    Frontera, Coahuila de Zaragoza·251+ employees·Contract manufacturer

    • ✓Final assembly and box build

    “HFI es un proveedor de Segundo Nivel(Tier 2) líder en productos para interiores automotrices que se especializa en corte y costura, espumado directo en pieza (foam-in-place o FIP, …”

    hfi-inc.comTakes outside ordersProfile →
  2. Gruas Resemsa

    Frontera, Coahuila de Zaragoza·51–100 employees·Job shop

    • ~Final assembly and box build
    • ✓Electromechanical assembly

    “Manejo y ensamblaje de sistemas eléctricos para garantizar un funcionamiento óptimo y seguro de los equipos.”

    gruasresemsa.comTakes outside ordersProfile →
  3. Equipos Mineros de Monclova

    Frontera, Coahuila de Zaragoza·251+ employees·Contract manufacturer

    • ~Final assembly and box build
    • ✓ISO 9001
    equimin.com.mxTakes outside ordersProfile →
  4. Sippsa

    Frontera, Coahuila de Zaragoza·101–250 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    sippsa.com.mxTakes outside ordersProfile →
  5. Arri de Frontera

    Frontera, Coahuila de Zaragoza·101–250 employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    • ✓ISO 9001
    arri.com.mxTakes outside ordersProfile →
  6. Ironcast de Frontera

    Frontera, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Final assembly and box build
    ironcastmx.comProfile →
  7. Denso AIR Systems de MexicoNot yet researched

    Frontera, Coahuila de Zaragoza·251+ employees·Other motor vehicle parts manufacturing

    • ~Electromechanical assembly
    Profile →
  8. Trinity Rail de México

    Frontera, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    trin.netProfile →
  9. Gunderson GimsaNot yet researched

    Frontera, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    gbrx.comProfile →
  10. TrametalNot yet researched

    Frontera, Coahuila de Zaragoza·51–100 employees·Railroad rolling stock manufacturing

    • ~Final assembly and box build
    • ~Electromechanical assembly
    Profile →
  11. CifsaNot yet researched

    Frontera, Coahuila de Zaragoza·51–100 employees·Manufacture of other general-purpose industrial machinery and equipment

    • ~Final assembly and box build
    Profile →
  12. Marketer 3 YIPNot yet researched

    Frontera, Coahuila de Zaragoza·11–30 employees·Agricultural Machinery and Equipment Manufacturing

    • ~Final assembly and box build
    Profile →
  13. Constructora de FabricacionesNot yet researched

    Frontera, Coahuila de Zaragoza·11–30 employees·Metalworking Machinery Manufacturing

    • ~Final assembly and box build
    • ~Electromechanical assembly
    Profile →
  14. Industrial EnriquezNot yet researched

    Frontera, Coahuila de Zaragoza·11–30 employees·Internal Combustion Engine, Turbine, and Transmission Manufacturing

    • ~Final assembly and box build
    Profile →
  15. Taller KadibNot yet researched

    Frontera, Coahuila de Zaragoza·11–30 employees·Railroad rolling stock manufacturing

    • ~Final assembly and box build
    • ~Electromechanical assembly
    Profile →
  16. 6bllcNot yet researched

    Frontera, Coahuila de Zaragoza·11–30 employees·Other Commercial and Service Industry Machinery Manufacturing

    • ~Final assembly and box build
    • ~Electromechanical assembly
    Profile →