RELYContract manufacturing·Menomonee Falls, WIISO 9001:2015 certified
Contract Manufacturing & Assembly Services
Remove the operational bottlenecks that cap growth.
RELY Contract Manufacturing manages assembly, wire harness, part sorting, rework, kitting and fulfillment programs from Menomonee Falls, Wisconsin. We help manufacturers move defined work out of production bottlenecks, with documented requirements, quality controls and a clear operating handoff.
Urgent sortation and containment: RELY responds within one business hour.
Production cells · RELY floor, Menomonee Falls
Customer programs
A sample of the companies RELY works with.
Four service families
Pick the work you need off your floor.
Use one service, or combine them into one program with one point of contact. RELY can build a harness, install it into a subassembly, inspect it, kit it and ship it under a single program.
Final assemblies & subassemblies.
Mechanical and electromechanical builds, PVC subassemblies, control boxes and line-ready components, built to approved requirements.
Explore contract assembly → Kitting, packaging & fulfillmentKits and packouts, verified to the BOM.
Production, service and retrofit kits, secondary packaging, variety packs, retail packouts and Amazon FBA prep.
Explore kitting & fulfillment → Part sorting, containment & reworkParts on hold at your dock.
Sort, inspect, test and rework at your plant, a supplier’s plant or RELY, against criteria you approve.
Explore sorting & rework → Wire harness & cable assemblyHarnesses stuck behind engineering.
Build-to-print wire harnesses, cable assemblies and control panel assembly, 100% continuity tested.
Explore harness & electrical →How programs start
From quote to scale.
RELY follows a structured process designed to move programs from quote to stable execution with clarity, control and speed.
Scope requirements
We define requirements, volume, timing, materials, quality needs, procurement considerations and operating constraints so the quote reflects execution reality.
Engineer the solution
We build the process, labor approach, quality controls, procurement strategy and the right mix of equipment, automation, fixtures and tooling.
Control the launch
We validate details, align documentation, secure materials, implement controls and ramp with discipline from the first build.
Scale with confidence
As demand grows or requirements change, we scale with the structure needed to keep supply, production and performance aligned.
Quality, communication, speed
No surprises is a process, not a promise.
01 · Quality
Written criteria. Trained, signed-off operators.
ISO 9001:2015 certified for contract manufacturing and assembly, with documented work instructions at the cell, defined inspection steps and layered process audits.
02 · Communication
One contact. Reporting on your cadence.
Each program has an identified primary contact and KPIs agreed around the work, so nobody in your plant chases status.
03 · Speed
One business hour on urgent sortation.
RELY responds to urgent sortation and containment inquiries within one business hour. Deployment and completion timing depend on the scope.
Sortation | Calendar 2025
62M+
Parts processed through RELY sortation and containment programs in 2025
Sortation | Historical Peak Week
4.5M
Parts processed through sortation in a single peak week. A documented peak, not a weekly capacity commitment
Facility
52K
Square feet in Menomonee Falls, WI
Quality system
ISO 9001:2015
Certified for contract manufacturing and assembly. View certificate (PDF)
From RELY production records and the Amtivo ISO 9001:2015 certificate (No. 263741, valid through March 19, 2027). Sortation volume does not indicate assembly capacity; capacity is evaluated per program.
Inside RELY
See what “Owned by RELY” looks like.
Processes are easier to trust when you can see how the work actually runs. Step inside RELY’s Menomonee Falls operation and see the people, production cells, training, quality controls and manufacturing programs behind the website.
The equipment matters. So do the systems around it.
RELY builds manufacturing programs around documented work instructions, trained people, defined quality controls, clear ownership and communication. That operating discipline is what allows work to move from launch into repeatable production and scale.
About the facility
RELY Contract Manufacturing operates from a 52,000-square-foot manufacturing facility in Menomonee Falls, Wisconsin. RELY supports contract assembly, wire harness and cable assembly, part sorting and containment, kitting, packaging, fulfillment and production-transfer programs using documented work instructions, trained operators and defined quality controls.
Video description
A 26-second continuous walkthrough of RELY’s production floor in Menomonee Falls, Wisconsin, with production-floor sound and no narration. It opens at a wire harness cell, where two operators build and stage cable assemblies at a stainless bench beside guarded equipment with light curtains and printed visual instructions posted at the station. The camera then moves across the main floor, past more production cells, color-coded totes and cartons staged on pallets, pallet racking and operators working at assembly and packing tables. It continues through an equipment area with benchtop presses and wire-processing equipment and ends at a table of completed wire harnesses beside RELY’s contract assembly display boards.
52,000 sq ft
Menomonee Falls manufacturing operation
ISO 9001:2015
High-mix production
Built around documented processes
Meet the people behind it
Featured case · No. 20
A manufacturer tripling sales moved subassembly off its main line.
A fast-growing water heater manufacturer was pulling its most experienced assemblers off the main line to build PVC subassemblies. RELY took over subassembly production and component procurement, and shipped kits ready to crate with the customer’s QC checklist.
- 2,400+
- Subassemblies produced per month
- 2,000
- Sq ft of customer production space freed
- 700
- Assembly hours saved in the first three months
- 21
- Kit configurations managed
Source: RELY Case Study No. 20. Figures apply to this program only.
Production transfers & service parts
Moving a product line, a legacy program or service parts?
Service parts, aftermarket programs and legacy production are strong fits when those products still matter to your customers but no longer belong on your main line. Tooling, BOMs, work instructions and required approvals move under a documented transfer plan. Formal approval stays with you and your customer.
What can move
- Inventory and open demand
- Customer-owned equipment and tooling
- Work instructions, BOMs and test requirements
- Production knowledge
How supply is protected
Depending on the program: pilot builds, staged product transfers, parallel production, advance inventory, first-article approval, run-at-rate validation and defined cutover gates.
Where the work runs
A plant within your plant. Or ours.
RELY runs defined work inside a customer or supplier facility under our on-site labor model, in RELY’s Menomonee Falls facility, or both. RELY manages the contracted work: supervision, training, work instructions, quality checks and reporting. It is not a staffing model where your team supervises extra people.
- Women-Owned, Wisconsin-built
- Operators trained and signed off to the work
- Sister staffing company: Engauge Workforce Solutions
Industries RELY supports
- Automotive
- Electronics & appliances
- Food, beverage & consumer
- Furniture & hardware
- Industrial equipment
- Medical & dental
- Recreation & outdoors
Networks: member of IPC, MEMA, MichAuto, Food & Beverage Wisconsin, MMAC and the Waukesha County Business Alliance. Leadership participates in Vistage, Executive Agenda and The Paranet Group peer groups.
Resources · The Quality Containment Series
One-page answers for the worst week of your year.
Written for plant, quality, purchasing and supply chain leaders. Open any piece; no sign-up required.
No. 06 · Supplier quality and procurementThe supplier caused the defect. Your plant should not have to staff the containment.Open PDF (new tab)- No. 08 · Quality leadershipTwenty inspectors without one criterion is twenty versions of “good.”Open PDF (new tab)
- No. 10 · Engineering leadershipEngineering should define the boundary. It should not have to run the sort.Open PDF (new tab)
- No. 13 · Materials and planningA completed sort on Friday doesn’t help a line that needs parts on Tuesday.Open PDF (new tab)
- No. 23 · Audit-ready recordsA pallet doesn’t leave on someone’s word. It leaves through a control system.Open PDF (new tab)
- No. 28 · ReportingNumbers you can act on are how the next sort gets smaller.Open PDF (new tab)
Don’t write an RFQ yet. Send what you have.
A drawing, a sample, a photo or a short description of the work is enough to start. A complete RFQ is not required for an initial fit review. Need an NDA first? Tell us and we start there.
General: 262.276.0050 · info@relycm.com · Parts on hold: 262.853.1634