Contract assembly and box build companies in Guanajuato, 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 233 contract assembly manufacturers in Guanajuato. 16 have researched profiles with capabilities quoted from their own websites, and 79 are confirmed to take outside orders.
Describe your part to rank these suppliers for your job:
Top 30 of 233
Researched profiles first, then by size · Updated October 15, 2026
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.”
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”
Apaseo el Grande, Guanajuato·251+ employees·Job shop
- ✓Final assembly and box build
“Ofrecemos servicios de Inyección y Ensamble de piezas plásticas para satisfacer los requerimientos específicos de nuestros clientes.”
San José Iturbide, Guanajuato·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓IATF 16949
“Secondary finishing and complex part assembly”
Comonfort, Guanajuato·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“Our state-of-the-art manufacturing technologies ensure the highest quality products for our customers. Leveraging our in-house value chain, we deliver fast, scalable solutions acro…”
Celaya, Guanajuato·101–250 employees·Contract manufacturer
- ✓Final assembly and box build
- ✓ISO 9001
“Contamos con líneas de ensamble flexibles, tanto a pie de maquina como fuera de máquina”
Valle de Santiago, Guanajuato·101–250 employees·Job shop
- ✓Final assembly and box build
- ~Electromechanical assembly
“Arvin Sango Bodyshell assemblies utilize automated and low cycle time assembly processes to meet your needs.”
Silao de la Victoria, Guanajuato·101–250 employees·Contract manufacturer
- ✓Final assembly and box build
“complex module assembly, sequencing and related value-added services”
Guanajuato, Guanajuato·31–50 employees·Job shop
- ~Final assembly and box build
- ✓Electromechanical assembly
“SIGto (Servicios de Ingeniería de Guanajuato S.A. de C.V) se estableció hace más de 19 años para proveer servicios especializados en el ensamble y cableado de gabinetes de control …”
León, Guanajuato·11–30 employees·Job shop
- ✓Electromechanical assembly
“Perform hands on electrical wiring, panel assembly, mechanical adjustments and troubleshooting for automation equipment.”
Irapuato, Guanajuato·11–30 employees·Contract manufacturer
- ✓Final assembly and box build
“Molded and stamped components combined into finished, tested sub-assemblies and full assemblies.”
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.”
Irapuato, Guanajuato·251+ employees·Industrial supplier
- ✓Final assembly and box build
“The production process covers the whole process of the design and development of die-casting tooling, die casting, trimming, heat treatment, precision machining, surface treatment …”
Irapuato, Guanajuato·251+ employees·Manufacture of reinforced and unreinforced plastic automotive parts
- ✓Electromechanical assembly
“Assembly of heat control panel and functional switch”
Irapuato, Guanajuato·101–250 employees·Industrial supplier
- ~Final assembly and box build
- ✓Electromechanical assembly
“llevamos a cabo la manufactura y ensamble de:”
Dolores Hidalgo Cuna de la Independencia Nacional, Guanajuato·251+ employees·Contract manufacturer
- ~Electromechanical assembly
Celaya, Guanajuato·251+ employees·Industrial supplier
- ~Final assembly and box build
- ~Electromechanical assembly
- ✓ISO 9001
Irapuato, Guanajuato·251+ employees·Industrial supplier
- ~Final assembly and box build
- ~Electromechanical assembly
Celaya, Guanajuato·251+ employees·Job shop
- ~Final assembly and box build
- ~Electromechanical assembly
Silao de la Victoria, Guanajuato·251+ employees·Contract manufacturer
- ~Electromechanical assembly
Celaya, Guanajuato·251+ employees·Job shop
- ~Electromechanical assembly
Bulk Tank InternationalNot yet researched
San José Iturbide, Guanajuato·251+ employees·Job shop
- ~Final assembly and box build
León, Guanajuato·251+ employees·Job shop
- ~Final assembly and box build
- ~Electromechanical assembly
San Miguel de Allende, Guanajuato·251+ employees·Industrial supplier
- ~Electromechanical assembly
San Miguel de Allende, Guanajuato·251+ employees·Job shop
- ~Electromechanical assembly
Irapuato, Guanajuato·251+ employees·Contract manufacturer
- ~Electromechanical assembly
San Miguel de Allende, Guanajuato·251+ employees·Job shop
- ~Electromechanical assembly
- ✓IATF 16949
- ✓ISO 14001
Acámbaro, Guanajuato·251+ employees·Job shop
- ~Electromechanical assembly
Irapuato, Guanajuato·251+ employees·Private label
- ~Final assembly and box build
- ~Electromechanical assembly