Contract assembly and box build companies in Estado de México, 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 391 contract assembly manufacturers in Estado de México. 13 have researched profiles with capabilities quoted from their own websites, and 113 are confirmed to take outside orders.
Describe your part to rank these suppliers for your job:
Top 30 of 391
Researched profiles first, then by size · Updated October 15, 2026
Lerma, México·251+ employees·Contract manufacturer
- ✓Final assembly and box build
“our assembly lines effortlessly combine multiple components into complete packaging solutions.”
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.”
Tianguistenco, México·251+ employees·Contract manufacturer
- ✓Final assembly and box build
- ✓AS9100
- ✓C-TPAT
- ✓IATF 16949
- ✓ISO 14001
“Hitchiner Manufacturing's Mexico operations has facilities that provide front end casting services and finishing and component assembly.”
Naucalpan de Juárez, México·101–250 employees·Job shop
- ✓Final assembly and box build
- ~Electromechanical assembly
- ✓ISO 9001
“Iniciamos con la comercialización de productos eléctricos, sin embargo nuestro crecimiento permitió tener un mayor alcance y comenzamos con el diseño, desarrollo y fabricación de D…”
Naucalpan de Juárez, México·51–100 employees·Contract manufacturer
- ✓Electromechanical assembly
- ✓ISO 9001
“Manual & Automatic Processes stablished for assembling rotating electrical critical components.”
Cuautitlán Izcalli, México·51–100 employees·Job shop
- ~Final assembly and box build
- ✓Electromechanical assembly
- ✓ISO 9001
“Montaje de componentes y estructura sobre el gabinete base.”
Lerma, México·51–100 employees·Contract manufacturer
- ✓Final assembly and box build
- ✓IATF 16949
“producción en serie y montaje de una sola fuente”
Toluca, México·31–50 employees·Job shop
- ~Final assembly and box build
- ✓Electromechanical assembly
“We offer engineering service such as mechanic and electric assembly.”
Naucalpan de Juárez, México·31–50 employees·Job shop
- ✓Final assembly and box build
“Ejecutamos ensamblajes precisos y controlados con personal especializado y herramientas de alta precisión.”
Naucalpan de Juárez, México·31–50 employees·Job shop
- ✓Final assembly and box build
“Armado e integración Integración de componentes e inserción de tuercas a presión o remachables.”
Nicolás Romero, México·11–30 employees·Job shop
- ✓Final assembly and box build
- ✓ISO 9001
“Ensamblado Integramos componentes y subconjuntos listos para instalación o puesta en operación.”
Lerma, México·11–30 employees·Job shop
- ✓Final assembly and box build
- ✓ISO 9001
“Taller de soldadura y armado de ensambles completos.”
Tultitlán, México·11–30 employees·Job shop
- ~Final assembly and box build
- ✓Electromechanical assembly
“Automatización”
Ecatepec de Morelos, México·251+ employees·Job shop
- ~Final assembly and box build
Coacalco de Berriozábal, México·251+ employees·Job shop
- ~Final assembly and box build
Ecatepec de Morelos, México·251+ employees·Job shop
- ~Final assembly and box build
Lerma, México·251+ employees·Job shop
- ~Final assembly and box build
- ~Electromechanical assembly
- ✓ISO 14001
- ✓ISO 9001
- ✓UL
Teoloyucan, México·251+ employees·Job shop
- ~Final assembly and box build
Tultitlán, México·251+ employees·Private label
- ~Electromechanical assembly
Ecatepec de Morelos, México·251+ employees·Job shop
- ~Final assembly and box build
Tultitlán, México·251+ employees·Contract manufacturer
- ~Electromechanical assembly
Tultitlán, México·251+ employees·Job shop
- ~Final assembly and box build
Zinacantepec, México·251+ employees·Industrial supplier
- ~Final assembly and box build
- ~Electromechanical assembly
Medidores Internacionales RochesterNot yet researched
Tlalnepantla de Baz, México·251+ employees·Industrial supplier
- ~Final assembly and box build
- ~Electromechanical assembly
Toluca, México·251+ employees·Job shop
- ~Final assembly and box build
- ✓ISO 9001
Naucalpan de Juárez, México·251+ employees·Job shop
- ~Final assembly and box build
Tlalnepantla de Baz, México·251+ employees·Job shop
- ~Final assembly and box build
- ~Electromechanical assembly
Jilotzingo, México·101–250 employees·Contract manufacturer
- ~Final assembly and box build
- ~Electromechanical assembly
Toluca, México·101–250 employees·Job shop
- ~Final assembly and box build
- ~Electromechanical assembly
Tultitlán, México·101–250 employees·Job shop
- ~Electromechanical assembly
- ✓ISO 9001