Turnkey Contract Manufacturing Service
One manufacturer for the whole product. We fabricate the metal and plastic, integrate the electronics, assemble, test and ship - so you manage a project instead of a supply chain.
Vertically Integrated - Sheet metal, CNC machining, stamping, tube, plastic injection and cable harnesses made under our own roofs.
Three Production Regions - China, Vietnam and Mexico. 190,000 sq ft across six facilities.
Engineering, Not Just Capacity - 40+ engineers and project managers. DFM feedback comes with the quote.
Built for High-Mix - Medium to high volume, high variety, mechanical and electro-mechanical products.
Canadian-owned since 2005 · Your drawings stay confidential, NDA on request
Most OEMs Don't Have a Manufacturing Problem. They Have a Coordination Problem.
The enclosure comes from one vendor. The PCB from another. Cable harness from a third. Someone has to own the assembly, and when the parts don't fit, everybody has a drawing that proves it wasn't them.
Komaspec was built to remove that. We started in 2005 as a five-person engineering office in Guangzhou and now run six facilities across China, Vietnam and Mexico with 350+ people. We make the metal and plastic parts ourselves, integrate the electronics, assemble the finished unit, test it and hand it to your forwarder. One quote, one project manager, one company accountable for the thing that arrives at your dock.
That vertical integration is the point. It's why we can hold a lead time, why a fit issue found at assembly gets solved in the same building the same week, and why our pricing doesn't carry three layers of margin.
Get a Free Manufacturing Review →What Is Turnkey Contract Manufacturing?
Turnkey contract manufacturing is outsourced production where a single manufacturer takes the product from finished design through to shipment: design-for-manufacturing feedback, prototyping, raw material and component purchasing, fabrication, assembly, quality control, packaging and handover to your freight forwarder. The customer manages one supplier relationship instead of coordinating a chain of them.
The alternative is contracting each stage separately. That can work when volumes are small and the product is simple. It stops working the moment a part has to fit another part, because now you're the systems integrator, and you're doing that job remotely, across time zones, without a factory floor to walk.
Turnkey shifts that responsibility to the manufacturer. It also shifts the incentive: when the same company cuts the metal, moulds the plastic and screws the unit together, tolerance arguments stop being a commercial negotiation and start being an internal engineering fix.
What's Included in a Komaspec Turnkey Project
| Stage | What We Handle |
|---|---|
| Design Review | DFM feedback at RFQ, drawing and sample stage. Cost drivers flagged before tooling is cut. |
| Sourcing | Component and raw material purchasing across a network of 300+ qualified suppliers. BOM localization where it lowers cost or lead time. |
| Fabrication | Sheet metal, CNC machining, stamping, tube processing, plastic injection, welding, cable and wire harnesses. PCBAs sourced and managed as part of the programme. |
| Assembly | Sub-assembly and finished goods assembly, kitting, custom jigs and go/no-go gauges. |
| Quality | 100% in-line inspection and functional testing. Digital QC records, traceable to work order and batch. |
| Logistics | Packaging design, labelling, export documentation and shipment through our forwarder network. |
Synchronized Single-Roof Production
Eliminate vendor finger-pointing. When mechanical fabrication, electronics integration, and final testing run under one accountable roof, lead times compress and quality stays uncompromising.
Talk to an EngineerWhat We Make Ourselves
Vertical integration only means something if the list is real. Here's ours.
Sheet Metal Fabrication
Fiber laser cutting up to 20mm, CNC bending from 24T to 100T including a robotic bending cell, PEM insertion, deburring and tumbling. 20-person welding team covering TIG, MIG, laser, spot and robotic welding.
CNC Machining & Turning
Turning with automated bar feeding, 3 and 4-axis milling, drilling, chamfering and threading. Hundreds of thousands of bushings, rings and bolts a year in steel and aluminium.
Plastic Injection
Seven presses from 130 to 650 tons, overmolding and insert molding, ultrasonic welding, colour matching, in-house 3D printing. Presses are networked for real-time monitoring and data capture.
Stamping
Manual and progressive stamping on presses from 16T to 200T, with CNC press stamping, auto winding and tube stamping. Secondary machining, welding and finishing in the same building.
Pipe & Tube Processing
CNC tube bending in 2 and 3-axis configurations, OD reducing, mechanical and laser tube cutting, stamping, drilling and welding — built for seamless integration into larger weldments.
Electronics & Box Build
Custom cable and wire harness production in-house, plus PCBA sourcing, PCB and BOM design support, custom PCBA test fixtures, firmware loading and functional test. Boards are made by qualified partners; we own the integration, testing and the finished unit.
Assembly Floor Lines & Workstations: 6 belt conveyors for high-volume lines, 6 plate conveyors for medium volume, 12 workstations for high-mix builds, plus an open production cell with mobile cranes for assemblies over 2.5m.
Three Production Regions, One Company
Where a product is built changes its cost, its lead time and where it can ship from. We run our own facilities in three countries, which means we can put a program in the right place instead of the only place — and move component supply between them without you having to re-qualify a new supplier.
| Region | Space | Facilities | Built for |
|---|---|---|---|
| Guangzhou, China | 110,000 ft² | 4 factories | Full vertical integration: sheet metal, CNC, stamping, tube, plastic injection, welding, cable harnesses, electronics integration, assembly and testing. Deepest component supply chain. |
| Hai Phong, Vietnam | 60,000 ft² | 1 factory | Laser cutting, CNC bending, welding, hardware and assembly. Manufacture and origin for products supplied into the US. |
| Juárez, Mexico | 20,000 ft² | 1 factory | Laser cutting, CNC bending, CNC milling and assembly. Short lead times and local support for North American customers. |
A single program can draw components from China, assemble in Vietnam and carry a made-in-Vietnam certificate of origin.
Same engineering team, same quality system, same account manager.
Why Customers Stay
A Fit Problem Is an Internal Problem
When a bracket doesn't seat at assembly, the sheet metal team and the assembly team are in the same building. It gets diagnosed and re-cut in days, not in a three-way email chain across two suppliers.
DFM Is Part of the Quote, Not an Invoice Line
40+ engineers and project managers. You get DFM input at RFQ, again at drawing stage, and again after samples - plus written sample build reports. We run hundreds of development projects a year, so the failure modes in your design are usually ones we've already seen.
Built Around High-Mix, Not Commodity Runs
Our lines are configured for variety: 12 high-mix workstations, quick changeovers, medium to high batch sizes.
300+ Suppliers
A dedicated sourcing team qualifies components across plastic, silicone, metal and electronics, and localizes BOMs to cut cost and lead time. Long-lead items are managed as part of the program, not raised as a problem three weeks before ship date.
150+ Repeat Customers
The number that matters in contract manufacturing isn't how many quotes a factory sends. It's how many customers order again. Ours is 150+, and our average annual growth has run at 20%.
Direct Factory Ownership
Western engineering and management on-site across all facilities in China, Vietnam, and Mexico.
From RFQ to Mass Production
Here's what actually happens after you send drawings. How long it takes depends on your product - tooling is usually the driver - and you'll get a dated schedule with your quote, not a guess.
RFQ & DFM Review
Send drawings and a BOM. Our engineers review manufacturability before we quote, and come back with the price plus the list of things we'd change to lower it.
Prototype
Engineering prototypes built in-house using 3D printing, sheet metal and CNC. Reviewed together, revised, and released as fabrication drawings under version control.
Tooling & T0 Samples
Tools are cut for injection, die cast or stamping where the design calls for it. T0 samples come back with a tooling review; T1 samples follow after fine-tuning.
Pilot Run
20 to 100 units built on the production process, not a bench. This is where assembly sequence, jigs, test fixtures and cycle times get proven - and where problems are still cheap to fix.
Mass Production
Volume production with 100% in-line inspection and functional testing, digital QC capture and batch-level traceability. PPAP support available.
Packaging & Shipment
Custom packaging design, labelling, export documentation, and shipment arranged through our freight forwarder network.
Quality You Can Audit, Not Just Trust
Every manufacturer says quality is their top priority. What that's worth depends entirely on whether you can see the evidence. Ours is digital, captured at the line, and exportable.
100% In-Line Testing
Every unit, not a sample. Electrical, mechanical and functional checks run as part of the production sequence.
Custom Jigs & Gauges
Designed and built in-house for each program, so in-process checks are objective rather than a matter of operator judgement.
Digital QC Data Capture
Cloud-based inspection plans are pushed to QC tablets with acceptance criteria. IQC, PQC and FQC data points are captured digitally with automated sampling.
Traceability & Reporting
Traceable to work order and batch level, internally and across suppliers. Data exports to COC and FQC reports for your records.
Certification Support: We've supported customers through product certification to CE, UL, FCC, VDE, CSA, ETL, KCC and other standards, including in-house and external laboratory testing.
Industries We Build For
Mining & Heavy Industry
IoT and telemetry devices, safety systems, lighting towers, generator enclosures, charging racks, battery packs.
Agriculture & Agritech
Smart farming equipment, IoT sensors, monitoring systems, water filtration and purification, storage and palletization, harvesting equipment.
Data Center & Infrastructure
Server racks, cabinets and enclosures held to tight dimensional tolerances with thermal management and EMI shielding.
Automotive & Recreational
Off-road vehicle equipment, snowmobile parts, cargo carriers and racks, RV parts and sub-assemblies.
Fitness & Sport
Gym and fitness equipment, electrical fitness products, bike racks and accessories, marine sporting equipment.
Durable Consumer Goods
Commercial appliances, consumer IoT products, commercial and waterproof lighting, solar energy equipment, D2C product kitting.
Don't See Your Industry Listed?
We build custom electro-mechanical and mechanical products across dozens of specialized sectors. Talk with our engineering team about your specific build requirements.
What These Projects Actually Look Like
Underground Mining IoT Device
Battery-powered mining light with IoT telemetry, cable and charging rack.
Required a custom plastic blend for diesel and chemical resistance, and extensive design support and testing to hit IPX7. We handled DFM, PCBA integration, custom cable and connector design, and cable management.
Commercial Sauna Heater
Stainless steel heater with electronic controls, sold into North America.
We localized the BOM for electronics and switches, ran DFM, fabricated the parts, procured off-the-shelf components, assembled and tested. We also supported external product certification and designed retail packaging.
Heavy-Duty Hitch-Mounted Bike Rack
Carries several e-bikes and mountain bikes, with a pneumatic assist system.
The pneumatic assist needed design troubleshooting before it was manufacturable. We built jigs and go/no-go fixtures for 100% in-process QC, and ran fatigue and performance testing.
Canadian Appliance Brand
One product family, three destination markets.
Custom PCBAs and electrical components produced in China and shipped to Vietnam. Vietnam assembles and supplies US market with certificate of origin. Mexico fabricates sheet metal parts for a separate product line.
Are We the Right Manufacturer for You?
We'd rather tell you now than after two rounds of quoting.
We're a Strong Fit If:
- ✓ Your product is mechanical or electro-mechanical, built from metal and plastic parts, often with electronics integrated.
- ✓ You're running high-mix, medium to high volume — variety matters more to you than one enormous production run.
- ✓ You have an ongoing production programme, not a one-off batch.
- ✓ You're an established SME, a larger firm launching a new product line, or a funded startup moving from prototype to production.
- ✓ Your industry doesn't have a ready-made ODM ecosystem, so you need a manufacturer who'll engineer alongside you.
There May Be a Better Route If:
- ✕ You need a handful of one-off sheet metal or CNC parts with no production programme behind them - our sister platform Komacut quotes those instantly online, and it's faster than going through us.
- ✕ You want commodity parts at the lowest possible unit price with no engineering involvement - that's not where our value sits.
- ✕ Your product is still at concept stage - we can support DFM, prototyping and troubleshooting, but we work from a design you own.
Contract Manufacturing FAQs
Answers to common questions about our turnkey contract manufacturing services.
Turnkey contract manufacturing is a comprehensive manufacturing solution where a single service provider handles the entire production process from design and engineering to manufacturing, assembly, and shipment of the final product. It simplifies the supply chain management, reduces overall project risks, and allows you to focus on your core business functions.
We sign an NDA before you send drawings, on request. Tooling paid for by the customer belongs to the customer. Designs, drawings and BOMs are held under revision control and are not shared outside the project team. As a Canadian-owned company operating our own facilities, we control who has access to your files rather than passing them down a subcontractor chain.
There's no fixed unit MOQ - it depends on the part, the process and whether tooling is involved. What matters more is that there's an ongoing production programme behind the enquiry rather than a single batch, since our setup is built around medium to high volume and high product variety. For low-volume or one-off sheet metal and CNC parts, use Komacut, our online instant-quote platform.
Yes, and it's worth discussing early. China gives you the deepest supply chain and the widest process range. Vietnam suits products shipping into the US where country of origin matters. Mexico gives North American customers shorter lead times on sheet metal parts and assemblies. Programmes can also be split across regions.
We provide DFM feedback and tooling engineering input during the pre-production phase, as part of the standard program workflow.
Yes. We work with a network of freight forwarders and can arrange shipment to most countries, including packaging design, labelling and export documentation. We currently serve customers in 25+ markets.
Yes. Please contact us at technicalsales@komaspec.com and we will be pleased to supply a reference list.
Start Your Project
Send us drawings and a BOM and you'll get a quote with DFM feedback attached — the cost drivers we can see, and what we'd change to bring the price down. No obligation, and no charge for the review.
Signed before you send anything
Included free with every quote
Named PM from RFQ to ship
Ready for a production quotation?
Request RFQ Review