Contract assembly and box build companies in 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 3,595 contract assembly manufacturers across Mexico. 278 have researched profiles with capabilities quoted from their own websites, and 1149 are confirmed to take outside orders.
Describe your part to rank these suppliers for your job:
Top 30 of 3,595
Researched profiles first, then by size · Updated October 15, 2026
Mexicali, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓Electromechanical assembly
- ✓IATF 16949
“our Mexico operation supports assembly, wire processing, injection molding, electrical and electromechanical assembly”
Tijuana, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓ISO 13485
- ✓ISO 14001
- ✓ISO 9001
“Molded and stamped components combined into finished, tested sub-assemblies and full assemblies.”
Silao de la Victoria, Guanajuato·251+ employees·Job shop
- ✓Final assembly and box build
- ~Electromechanical assembly
“Ensamble”
Irapuato, Guanajuato·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Automated assembly is quickly becoming a key process in American manufacturing for all industries.”
Lerma, México·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“our assembly lines effortlessly combine multiple components into complete packaging solutions.”
Apodaca, Nuevo León·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“MEXICO - Secondary Assembly - 2 Manufacturing Locations - Injection Molding”
Puebla, Puebla·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Ensamble por Ultrasonido y ensamble de Componentes”
Amozoc, Puebla·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Proma offers in house stamping, welding, assembly and painting operations.”
El Marqués, Querétaro·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Nuestra dedicación a la seguridad nos ha llevado a fabricar una variedad de módulos de bolsas de aire, como las frontales y laterales, en las que nos involucramos desde su costura …”
Nogales, Sonora·251+ employees·Contract manufacturer
- ✓Electromechanical assembly
“EDS Manufacturing, Inc. is an IATF 16949 and ISO 9001 certified world-class supplier of electrical wire harnesses, battery cables, and electro-mechanical assemblies to the Automoti…”
Reynosa, Tamaulipas·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“The manufacturing site in Reynosa, Mexico, offers production, decoration and assembly of full mascara packs for North and Latin America.”
Matamoros, Tamaulipas·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“At NovaLink, we manufacture quality electronic products, including assembly, as one of the premier Mexico contract manufacturing partners.”
Ciudad Madero, Tamaulipas·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓ISO 9001
“Armado e inspección”
Acuña, Coahuila de Zaragoza·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Each Piston Interiors product is meticulously assembled to ensure proper form, fit and function.”
Guadalajara, Jalisco·251+ employees·Job shop
- ✓Final assembly and box build
- ✓ISO 9001
“Ensamble”
Mexicali, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓Electromechanical assembly
“Vertical Manufacturing and Assembly — for full system integration, including PCBA, metals and interconnect solutions for electronic mechanical and electro-mechanical assemblies”
Tijuana, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓IATF 16949
- ✓ISO 9001
“TIMS (Tekmart International Manufacturing Solutions) operates two injection molding and assembly facilities in Ciudad Juárez and Tijuana, Mexico — serving demanding industrial prog…”
Tijuana, Baja California·251+ employees·Job shop
- ✓Electromechanical assembly
- ✓IATF 16949
- ✓ISO 14001
- ✓ISO 45001
- ✓ISO 9001
“We have 19 Injection Molding machines and an area for electronic product assembly, with more than 300 Mexican employees.”
Tijuana, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Box Build”
Tijuana, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓IATF 16949
- ✓ISO 14001
“30+ years building PCBA, box build, and full turnkey assembly for demanding, high volume programs.”
Ensenada, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓Electromechanical assembly
“We offer you a full line of solutions ranging from simple discrete wire passing through a complex cable assemblies, electro-mechanical assemblies to a box build product.”
Tijuana, Baja California·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Assembly”
Juárez, Chihuahua·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ~Electromechanical assembly
“Full Product Assembly”
Juárez, Chihuahua·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓ISO 9001
“Beyond molding, we provide material selection guidance, insert molding, overmolding, gas-assist injection molding (GAIM), robotic assembly, and in-mold labeling — reducing secondar…”
Juárez, Chihuahua·251+ employees·Job shop
- ✓Final assembly and box build
“In addition to injection molding of industrial products, we provide services including sonic welding and product assembly.”
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, …”
Azcapotzalco, Ciudad de México·251+ employees·Job shop
- ✓Electromechanical assembly
- ✓IATF 16949
- ✓ISO 14001
“We add value to our stampings through overmolding and assembly solutions.”
Apaseo el Grande, Guanajuato·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓IATF 16949
“Contamos con expertos en líneas de ensamble para el mercado NAFTA y europeo, Ofreciendo ensambles y sub ensambles a nuestros clientes como un servicio integral”
San Pedro Tlaquepaque, Jalisco·251+ employees·Contract manufacturer
- ✓Electromechanical assembly
“Custom Cable Assemblies, Wiring Harnesses, Box Builds, & Control Panels”
Toluca, México·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Approximately 600 employees across the United States and Mexico design, machine, forge, assemble, and test the components our customers depend on.”
3,565 more. Search to see suppliers ranked for your part