Before ordering rugged industrial computers from a Chinese manufacturer, confirm five things in writing:
- The MOQ for your exact configuration, not the catalog model.
- A lead time broken down by parts sourcing and production.
- A warranty that states what is covered and who pays freight.
- A validation process that ties your approved sample to the production batch.
- A named after-sales process with an RMA turnaround time and spare-part availability.
Most problems in China industrial PC sourcing don’t come from the hardware. They come from details that were agreed in chat and never written into the proforma invoice (PI).
This checklist is written from the factory side. VstrongTech is a Shenzhen industrial computer manufacturer founded in 2016, supplying industrial panel PCs, fanless box PCs, rugged tablets and industrial monitors to OEMs and system integrators. These are the questions we see experienced buyers ask, and the ones first-time buyers wish they had asked.
The Pre-Order Checklist at a Glance
| What to confirm | Why it matters | Red flag |
|---|---|---|
| MOQ for your configuration | Customization changes MOQ, not the base model | “MOQ is 1 pc” with no mention of custom items |
| Lead time, itemized | CPUs, LCD panels and touch sensors drive delays | One number with no breakdown |
| Warranty scope and freight terms | “2-year warranty” can mean very different things | No written RMA procedure |
| Golden sample and test reports | Production must match what you approved | Test reports for a different model |
| Certification coverage | CE/IP results apply to a specific build | Certificate model number ≠ your model |
| Long-term availability and EOL notice | Your machine may sell for 5+ years | Consumer-grade CPU in an OEM design |
| After-sales contact and turnaround | Downtime costs more than the PC | “Contact your sales rep” as the only process |
1. MOQ: Ask About Your Configuration, Not the Catalog
MOQ at a Chinese industrial PC factory depends on what you change, not on the product family. Typical tiers:
| Tier | Examples | Typical MOQ |
|---|---|---|
| Standard configuration | A catalog model | Usually 1 unit for samples and small orders |
| Configuration changes | RAM, SSD, OS image, Wi-Fi/4G module | Low or no MOQ, because these use standard parts |
| Light customization | Logo on the front bezel, BIOS boot screen, I/O swap on an existing board, custom power input range | Often around 50–100 units [VST: confirm] |
| Deep customization | New enclosure or mold, custom mainboard, special display size | Higher MOQ, or a one-time NRE fee [VST: confirm] |
Ask these two questions:
- Is the MOQ per order, or per year across several deliveries?
- Can a one-time NRE fee replace a higher MOQ?
For OEM equipment builders shipping 100–300 machines a year, splitting an annual quantity into scheduled deliveries is often the most practical arrangement.
2. Lead Time: Get It Itemized
A single number like “4 weeks” tells you little. Ask for the lead time broken into:
- Parts sourcing. Processors, LCD panels, touch sensors and memory are the usual bottlenecks. Industrial-grade displays and specific CPU SKUs can take longer than the assembly itself.
- Production and testing. This covers assembly, burn-in and final QC.
- Shipping. Air, sea or express, plus your Incoterm.
Typical ranges for Chinese IPC manufacturers [VST: replace with your actual lead times]:
- Standard configurations in stock: about 7–15 working days.
- Configured-to-order builds: about 3–5 weeks.
- Projects needing new tooling or custom boards: 8–12 weeks or more, including sample approval.
For batch delivery reliability, ask: “If I order 500 units, can you ship in stages, and do you keep buffer stock of the critical components for my model?” A supplier that can answer this in terms of specific parts has planned for your volume.
3. Warranty: Read the Scope, Not the Number
Most Chinese industrial PC suppliers offer 1–2 years of standard warranty, and many offer extensions [VST: state your standard and extended terms]. The number matters less than these details:
- Return-to-base or advance replacement? With return-to-base, the unit comes back to China. For overseas OEMs, return shipping and customs time can exceed the repair time.
- Who pays freight each way?
- DOA window. How many days after delivery can a dead-on-arrival unit be replaced outright?
- Exclusions. Batteries in rugged tablets, touch screens with physical damage, and user-installed storage are common exclusions or have shorter coverage.
- Board-level repair or unit swap? A factory that repairs at component level can support you after the model is discontinued.
4. Customization Validation: Lock the Golden Sample
This is where most costly mistakes happen. A good validation process looks like this:
- Engineering sample. You test it in your own machine: fit, I/O, software, power, EMC behavior with your equipment.
- Revision. Any changes are documented, not agreed in chat.
- Golden sample. The approved unit is signed off, and both sides keep one. Mass production must match it in BOM, BIOS version and appearance.
- Pre-shipment inspection. Either your own inspector or a third party checks against the golden sample.
Test reports to request, and what they should cover:
- Ingress protection per IEC 60529, tested on your enclosure. If you changed a cable gland or added a port, an IP rating on the standard model may no longer apply. See our guide to IP65, IP67 and IP69K ratings for industrial PCs for how the tests differ.
- Operating temperature per IEC 60068-2-1 (cold) and IEC 60068-2-2 (dry heat), at the range stated on the datasheet.
- Vibration and shock per IEC 60068-2-6 and -2-27. For rugged tablets, look for the specific MIL-STD-810 test methods, such as 514 (vibration) and 516 (shock), not a generic “military grade” claim.
- Burn-in record. How many hours, at what temperature, per unit or per batch.
Certification check: A CE Declaration of Conformity applies to a specific model and configuration. If your customization changes the power supply, mainboard or wireless modules, ask whether the existing EMC (EN 55032 / EN 55035) and safety test results still apply, or whether retesting is needed.
5. After-Sales and Long-Term Availability
For OEM equipment that sells for five years or more, long-term availability matters as much as the first order. Confirm these points:
- Processor platform. Designs based on Intel’s embedded/IoT roadmap SKUs carry extended availability commitments. Consumer-grade CPUs can disappear within a year or two.
- BOM freeze and change notice. Will the supplier notify you in writing before changing any key component? How many months of notice do you get before end of life, and is there a last-time-buy window?
[VST: state your PCN/EOL notice period] - Spare parts. For how many years after the last shipment are spare parts and repair service available?
- Technical support. Who answers (engineer or salesperson), in which time zone, and how fast? Can they support BIOS changes, driver issues and OS images after delivery?
- RMA turnaround. How many days from receiving a faulty unit to shipping back a repaired or replaced one?
[VST: state target turnaround]
How to Compare Industrial PC Suppliers Side by Side
When you shortlist two or three suppliers, score them on the same four criteria:
| Criterion | What to ask | What a good answer looks like |
|---|---|---|
| Long-term availability | “What CPU and display are in this model, and what is your EOL notice period?” | Names specific parts and gives a written notice period |
| Sample testing | “Can I test a sample in my machine before committing, and will production match it?” | Offers a golden-sample process and pre-shipment inspection |
| Technical support | “Who handles BIOS or driver issues after delivery?” | A named engineering contact, not only sales |
| Batch delivery reliability | “How do you handle a 500-unit order with staged deliveries?” | Explains component buffering and production scheduling |
Red Flags Before You Pay a Deposit
- Test reports or certificates carry a different model number from the one you are buying.
- The only warranty terms are “1 year” or “2 years,” with no written procedure.
- The supplier cannot name the CPU SKU, LCD panel brand or touch controller used.
- Customization is accepted with no sample stage.
- The PI lists only a model number, with no configuration details.
FAQ
What is the typical MOQ for custom industrial PCs from China?
It depends on the level of customization. Standard configurations can usually be ordered as single samples. Light customization such as logos, BIOS screens or I/O changes often starts around 50–100 units. New enclosures or custom boards usually require higher volumes or a one-time NRE fee.
How long does it take to manufacture a custom rugged computer in China?
Configured-to-order builds usually take about 3–5 weeks. Projects that need new tooling or custom mainboards typically take 8–12 weeks or more, including sample approval. Component availability, especially CPUs and industrial displays, is the main variable.
Does a CE certificate cover my customized version?
Not automatically. CE conformity applies to a specific model and configuration. Changes to the power supply, mainboard or wireless modules may require updated EMC or safety testing.
Can I order one sample before placing a bulk order?
Most industrial PC manufacturers in China, including VstrongTech, supply single samples for evaluation. For customized units, the approved sample should become the golden sample that mass production must match.
What warranty should I expect from a Chinese industrial PC manufacturer?
One to two years is common, with extended options available. Confirm the details as well as the length: return-to-base or advance replacement, freight responsibility, the DOA window and any exclusions.
Send Us Your Configuration
If you are planning an OEM or integration project, send us:
- Screen size
- I/O requirements
- Power input
- Operating environment
- Annual quantity
We will reply with the MOQ, an itemized lead time and a sample plan for your specific configuration. Browse our industrial panel PC range or contact our sales engineering team.