MRO Modular engineers and fabricates custom aluminum extrusion structures — workstations, machine frames, fixtures, and integrated production systems — for industrial clients who need faster turnaround and tighter tolerances than the national suppliers can deliver. Backed by three decades of Santos MFG Corp. manufacturing heritage, designed in SolidWorks, and fabricated under one roof in El Paso, Texas.
MRO Modular isn't a startup — it's a new division of a manufacturer that's been machining parts for industrial America since 1989.
Santos MFG Corp. was founded in 1989 by Juan Santos — a U.S. Marine, Vietnam War veteran, and former shop floor foreman at Border Steel and Phelps Dodge. He built the company on the same principles he carried out of the Corps: hard work, discipline, and service.
What started as a small operation in Ciudad Juárez grew into a trusted manufacturing partner serving customers across the United States and Mexico. Today, his son Juan Roberto Santos continues that legacy — maintaining the same standards of precision, reliability, and financial stability that serious industrial buyers require.
MRO Modular is the next chapter: a focused division applying that same three-decade foundation to the fast-growing modular aluminum extrusion market. Same shop floor. Same engineering discipline. Purpose-built for clients like Eaton and the industrial MRO sector.
In memory of Juan Santos · USMC · 1945 — 2016 · Founder
Most extrusion suppliers ship components. We ship complete systems — cut, machined, welded, engraved, and assembled — with the design work handled by the same team that fabricates it.
Custom workstations, machine frames, assembly tables, guarding, and production fixtures engineered for flexibility and long service life.
Tight-tolerance CNC milling and turning with multi-tool capacity. Brackets, mounting plates, and specialty components for production and short-run work.
Full-service metal fabrication, welding, and mill work for specialized components and custom industrial assemblies — from prototype to production.
High-accuracy laser cutting and engraving for panels, plates, industrial labels, and component marking with consistent repeatability.
In-house SolidWorks design supports product development, DFM review, and manufacturing optimization. Full 3D models delivered before fabrication.
Inspection, materials sorting, and rework services backed by a Mitutoyo optical comparator and precision measurement to meet strict specification requirements.
Modular aluminum is the flagship — but it sits on top of a machining and fabrication foundation built over decades inside Santos MFG Corp.
We design and manufacture custom modular aluminum extrusion systems — workstations, machine frames, assembly tables, and industrial structures built for flexibility, durability, and efficient production environments.
Our facility is equipped with advanced CNC turning and milling, including multi-tool CNC lathes and vertical milling machines, producing high-precision components for both short-run and production manufacturing.
From metal fabrication and welding to stamping and assembly, we provide integrated manufacturing services that support complex builds and custom industrial solutions — delivered as complete systems, not loose parts.
Using SolidWorks and modern CAM tooling, our team develops optimized designs and efficient production workflows that streamline fabrication and ensure consistent quality from first article through production.
Inspection and measurement equipment — including a Mitutoyo optical comparator and Kent precision grinding systems — ensures every component meets strict dimensional and specification requirements.
We support automotive, medical, electrical/electronic, and industrial MRO sectors, manufacturing components from aluminum, stainless steel, carbon steel, tool steels, and engineering plastics.
What we run and what we run through it. Full vertical integration from raw stock to finished, inspected assembly.
Our customers run production lines, maintenance shops, and engineering groups where downtime costs money and specs are non-negotiable.
Whether it's a single fixture, a full workstation system, or a recurring production run — share your specs, drawings, or a rough sketch. We'll reply with a quote, timeline, and any DFM notes our engineering team flags.