Electronic Assembly and Sub-Assembly Manufacturing in Mexico
Shelmex is an electronic assembly manufacturer in Mexico for brands that need more than parts on a bench. We assemble electronic sub-assemblies and complete box builds to your drawings, connect them with cables and harnesses built by our own wiring team, and check the work before it ships. Every project is planned around your product, so you get an assembly built for the way your equipment works, not a catalog item.
Where Electronic Assembly Fits in Your Product
Electronic assembly is the stage where boards, components, wiring, and hardware come together into a working sub-assembly or unit. If you only need the wiring, see our wire harness and cable assembly services.
If you want one partner to run the whole program, from sourcing to delivery, see our electronics manufacturing services. Here, we focus on bringing all of those pieces together.
Electronic Assemblies We Build
Electronic sub-assemblies
Electrical and electronic component assemblies
Integrated cable and harness assemblies
Sub-assemblies delivered with their cables and harnesses already built and connected by our wiring team.
Box build and enclosure assembly
Electromechanical assemblies
Working on Something Different?
If your assembly does not fit these categories, send us the drawing or a sample. We plan the build and the testing around your product. Tell us about your project.
Industries We Support
- Home appliances and consumer electronics: control panels, power sections, and internal assemblies for household products.
- HVAC and climate control: assemblies for thermostats, control boards, and power units in air conditioning and ventilation equipment.
- Industrial equipment: electronic and electromechanical assemblies for machines and production equipment.
- Medical equipment: electronic sub-assemblies built to the specifications and quality requirements of medical equipment brands.
- Communication equipment: assemblies for devices that keep data and signals moving.
The Shelmex Difference in Electronic Assembly
- Three decades of assembly work: Shelmex started in 1996 and grew from sub-assembly into wire harnesses, medical, and electronics.
- Wiring expertise in house: the experience of our wire harness division goes into every assembly we wire.
- Built near the border: we produce in Apodaca, Nuevo León, a short drive from Texas, with USMCA access for shipments to the United States.
Frequently Asked Questions
Can you work with circuit boards from our current supplier?
Yes. We can integrate boards you already buy, or source them for you as part of an electronics manufacturing services program, whichever fits your supply chain better.
What do you need to quote an electronic assembly?
Send us your drawings or a sample, the bill of materials if you have one, your expected volumes, and any test requirements. With that, we plan the build and prepare your quote.
Can you build prototypes before volume production?
Yes. We can start with prototypes or a pilot run so you can validate the design, then carry the same build into volume production once it is approved.