Agalma Sourcing

Contract assembly and box build companies in Piedras Negras, 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 11 contract assembly manufacturers in Piedras Negras. 1 have researched profiles with capabilities quoted from their own websites, and 3 are confirmed to take outside orders.

Describe your part to rank these suppliers for your job:

Top 9 of 11

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

  1. Structural Graphics

    Piedras Negras, Coahuila de Zaragoza·101–250 employees·Job shop

    • ✓Final assembly and box build

    “Our print production and hand assembly is handled in Texas and just across the border.”

    structuralgraphics.comTakes outside ordersProfile →
  2. Transformadores de Piedras Negras

    Piedras Negras, Coahuila de Zaragoza·251+ employees·Job shop

    • ~Final assembly and box build
    • ~Electromechanical assembly
    basler.comTakes outside ordersProfile →
  3. Elektrokontakt

    Piedras Negras, Coahuila de Zaragoza·251+ employees·Job shop

    • ~Electromechanical assembly
    • ✓IATF 16949
    • ✓ISO 14001
    autoelectric.comTakes outside ordersProfile →
  4. Lancer Worldwide

    Piedras Negras, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    lancerworldwide.comProfile →
  5. Regal Rexnord

    Piedras Negras, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Final assembly and box build
    • ~Electromechanical assembly
    regalrexnord.comProfile →
  6. PKC Group

    Piedras Negras, Coahuila de Zaragoza·251+ employees·Industrial supplier

    • ~Electromechanical assembly
    motherson.comProfile →
  7. General de Cable de Mexico del NorteNot yet researched

    Piedras Negras, Coahuila de Zaragoza·101–250 employees·Electrical and electronic equipment and parts manufacturing for motor vehicles

    • ~Electromechanical assembly
    mx.prysmian.comProfile →
  8. Erich Jaeger

    Piedras Negras, Coahuila de Zaragoza·101–250 employees·Industrial supplier

    • ~Electromechanical assembly
    erich-jaeger.comProfile →
  9. Fabricación de Otra Maquinaria y Equipo para la Industria en General sin NombreNot yet researched

    Piedras Negras, Coahuila de Zaragoza·11–30 employees·Manufacture of other general-purpose industrial machinery and equipment

    • ~Final assembly and box build
    Profile →

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