Custom Vacuum Forming Manufacturer for OEM Industrial Parts
We’ve been making vacuum-formed plastic parts in Dongguan since 1997. Today, our 20,000 m² plant runs 16 vacuum forming machines (the largest forms parts up to 5000 × 2500 × 1000 mm), 28 CNC trimming machines, and 15 five-axis CNC stations. We hold IATF 16949 certification for automotive work and ship roughly 60% of our output to OEMs in Germany, the United States, France, the UK, and Japan.
We work with brands you’ve heard of — Louis Vuitton, Guerlain (LVMH), Foxconn, Wistron, KTC, Hisense — and we work with engineers shipping their first prototype.
One unit or 100,000. Mold from $200. First sample in 5 working days. Free DFM review returned within 48 hours of you sending the file.
Send Drawing for Free DFM Review →
Who actually reads a page like this?
Most visitors here are one of three people:
- An engineer who has a STEP file open in another tab, knows their part is too big for injection molding, and wants to find out if vacuum forming is realistic.
- A procurement manager who’s been told “find us a thermoforming supplier in China” and needs to short-list 3–5 factories before requesting quotes.
- A startup founder or product designer who’s never made a custom plastic part and is trying to figure out if this is the right process.
This page answers what each of you is actually trying to find out, in plain language. If you want the short version, scroll to the Specs section. If you want pricing, scroll to Cost. If you want to know whether we’re real, scroll to Customers.
What we make (and what we don’t)
We make: large or thick plastic parts formed from a single sheet of thermoplastic. Heavy gauge work — sheets 3 mm to 12 mm thick, sometimes thicker — is what we’re built for. Typical parts:
- Bumper covers, undertrays, and battery enclosures for EVs
- Robot body shells for AMRs and cobots
- Machine guards meeting OSHA / ANSI B11.19
- Outdoor enclosures for EV charging stations (ASA, weather-stable)
- Medical equipment housings (ISO 13485 documented)
- Aerospace cabin panels (FAR 25.853 grades available)
- Luxury retail displays for Louis Vuitton and Guerlain (we’ve been making these since 2018)
We don’t make: thin packaging trays, blister packs, or yogurt cups. That’s roll-fed thin gauge thermoforming and a different factory entirely. If your part is one of those, we’ll point you to a partner who does it well.
Specs (the page you actually came for)
| Value | |
|---|---|
| Maximum part size | 5000 × 2500 × 1000 mm |
| Sheet thickness | 0.5 – 12 mm (heavy gauge specialty) |
| Tolerance | ±0.3 mm critical, ±0.5 mm general |
| Minimum order | 1 piece (yes, single units, with prototype tooling) |
| Mold cost from | $200 (MDF prototype tool) to $15,000 (production aluminum) |
| First sample | 5 working days after tool approval |
| DFM review turnaround | 48 hours after you send STEP/IGS/STP |
| Production lead time | 2–3 weeks for typical orders |
| Shipping | FOB Shenzhen, FCA Dongguan, or DDP to your door |
| Vacuum forming machines | 16 sets (largest 5000 mm bed) |
| CNC trim/drill | 28 three-axis + 15 five-axis machines |
| Post-processing | PU paint, silk-screen, pad print, laser engraving, EMI shielding, ultrasonic welding, sub-assembly |
| Materials in stock | ABS, HIPS, PETG, PC, PMMA, HDPE, PP, PE, PVC, ASA, TPO, Kydex |
| Sheet extrusion | In-house (we make our own sheet, with custom thickness, color, and texture) |
| Mold types | Block aluminum, casting aluminum, fiberglass, acid-etched texture, sliding-block (for undercuts) |
| Patents | 40+ in vacuum forming process and tooling |
| Certifications | ISO 9001:2015, ISO 14001, ISO 45001, IATF 16949 |
The 5000 mm forming bed is unusual. Most thermoformers in China and the US top out around 2400–3000 mm. If your part is over 2500 mm in any dimension, we’re one of the few factories that can form it in one piece without bonding seams — which is what made us LV’s go-to supplier for their large-format retail display work.
Cost: what you should expect to pay
Pricing breaks down into two parts: the mold (one-time) and the per-piece cost (every unit).
Mold cost — what drives it:
- Part size (bigger sheet = bigger tool stock)
- Geometry complexity (undercuts, fine detail = sliding-block tooling = more labor)
- Tool material (MDF for prototype, fiberglass for short runs, aluminum for production)
- Surface texture requirements (acid-etched, leather grain = extra steps)
| Mold type | Typical cost | Best for |
|---|---|---|
| MDF / wood prototype | $200 – $500 | 1–10 units, design validation |
| Fiberglass | $800 – $3,000 | 10–500 units |
| Cast aluminum | $2,500 – $7,000 | 500–5,000 units |
| Block aluminum | $5,000 – $15,000 | 5,000+ units, fine detail, long life |
| Sliding-block aluminum | +30% on above | Undercut features |
Per-piece cost — driven by:
- Sheet size (material consumption)
- Material grade (ABS ≈ 1.0×, PC ≈ 2.5×, Kydex ≈ 2.2×, HDPE ≈ 0.9×)
- Wall thickness (thicker = more material)
- Secondary operations (paint, drilling, EMI shielding, assembly)
- Annual volume (higher volume → lower per-unit price)
Real ranges from our current 2026 quotes:
| Part profile | Volume | Material | Per-piece price |
|---|---|---|---|
| Small enclosure 200 × 150 × 80 mm | 500/yr | ABS | $4 – $9 |
| Robot shell 600 × 400 × 200 mm | 1,000/yr | ABS soft-touch | $22 – $38 |
| EV charging station cover 1200 × 800 × 400 mm | 2,000/yr | ASA | $48 – $85 |
| Vehicle body panel 2500 × 1500 × 600 mm | 200/yr | PC | $180 – $310 |
| Large display fixture 3000 × 1800 × 800 mm | 100/yr | PMMA | $340 – $620 |
These are real ranges from real shipments — not aspirational pricing. Send your drawing and we’ll give you a number specific to your project.
For a back-of-envelope comparison with injection molding: vacuum forming wins on tooling cost up to roughly 3,000–5,000 units per year for medium parts, after which injection’s lower per-piece cost catches up. That crossover number is consistent with what Xometry, Premium Parts, and other industry sources publish, and matches what we see in our cost calculator (used by 500+ engineers in 2026).
How a project actually moves through our factory
Here’s the step-by-step, in the order things happen:
Day 0 — You send a drawing. STEP, IGS, STP, or even a hand sketch with dimensions. Mutual NDA before review if you want.
Day 1–2 — DFM review. Our engineering team — six people, average 12 years’ thermoforming experience — checks: draft angle (we want ≥ 3°, can work with 1° on aluminum tools), wall thickness uniformity, undercut feasibility, material recommendation, cycle time. You get a written report with a pass/fail and any geometry changes we’d suggest.
Day 3–5 — Quote. Tool cost, per-piece price at your target volume tiers, lead time, payment terms, Incoterms. Shipped as a PDF with line items, not a vague “we’ll see.”
Day 6–10 — Tool kick-off (if you proceed). We design the mold in our own CAD (we don’t outsource tooling — that’s how we control lead time). For prototype MDF tools, we can be cutting metal in 2–3 days. Aluminum production tools take 2–3 weeks.
Day 11–15 (prototype path) — First sample shipped. First-article inspection report with full dimensional check. You approve, request changes, or reject.
Day 16 onward — Production. Sheets cut, dried (PC and ABS need 4 hours at 110 °C — yes, this matters), pre-heated, formed, trimmed on 5-axis CNC, painted/printed/assembled as required. AQL 1.0 sampling on final inspection.
Final — Logistics. Wood crates or custom packaging. We ship FOB Shenzhen or DDP to your door (most US/EU customers prefer DDP because it removes customs hassle on their side).
What the comparison with injection molding actually looks like
Engineers ask us this constantly, so here’s the comparison without the marketing fluff:
| Vacuum forming (our work) | Injection molding | |
|---|---|---|
| Tool cost (typical) | $200 – $15,000 | $10,000 – $100,000+ |
| Tool lead time | 1–3 weeks | 8–14 weeks |
| Cost crossover (medium part) | Better below ~3,000 units/yr | Better above ~3,000 units/yr |
| Max part size in one piece | Up to 5000 mm with our equipment | Typically < 1000 mm |
| Wall thickness | 0.5 – 12 mm | 1 – 5 mm |
| Surface finish | One side molded (textured tool side) | Both sides molded |
| Material change cost | Just swap the sheet | New tool may be required |
| Best for | Large parts, low–mid volume, fast prototyping | High volume, small parts, two-sided detail |
The honest summary: if your part is small (< 200 mm), needs detail on both sides, and you'll ship 50,000+ per year, get an injection molding quote first. Otherwise vacuum forming will save you tooling money and 6–10 weeks of lead time.
In 2025–2026, US tariffs on steel and aluminum have pushed injection mold prices up another 15–25%, which is part of why we’ve seen more engineers cross-shop vacuum forming in the last 12 months. (Sources at the bottom of this page.)
Customers (verified, not stock photos)
Some customers we’ve shipped production parts to, listed because we have written permission to mention them:
- Louis Vuitton — Working together since 2018. Large-format retail display fixtures, custom acrylic and ABS components for global flagship stores. 6+ years on the program. 100% on-time delivery on the last 24 months of orders.
- Guerlain (LVMH) — Cosmetics retail and trade-show display work.
- Foxconn — Electronics housings.
- Wistron — Display and electronics enclosures.
- KTC — Display covers, monitor housings.
- Hisense — Appliance and electronics components.
We can supply references for a similar project type after NDA, on request.
A real case (the one we get asked about most)
Project: Vehicle body shell for a Chinese commercial vehicle manufacturer.
Part size: Maximum length 2,500 mm.
Constraint: Customer needed lightweighting without losing structural strength, plus tight assembly tolerances on multiple body panels that had to fit together.
Material: ABS sheet, in-house extruded.
What we did:
- Worked through the original design with their engineers to optimize draft angles and wall thickness for vacuum forming (their first design needed 8 changes — most were < 1 mm shifts, none functional)
- Used our 5000 mm forming bed to make the longest panel as a single part, avoiding seam-bonding
- Manual edge trimming on critical mating surfaces to keep panel-to-panel gap consistent
- Pre-assembled and polished components in our own facility before shipping
- Overall vehicle mass reduced by 10% vs. the original metal-fabricated design
- Lead time on the project shortened by 5% through pre-assembly coordination
- Currently in series production
Result:
We have similar case studies for AMR robot shells (1650 mm, ABS soft-touch, 14 sensor cutouts at ±0.2 mm), industrial machine guards (2150 mm HDPE, OSHA & ANSI B11.19), and EV charging enclosures. They’re in our /case section.
Industries we serve, in plain English
Automotive (IATF 16949 certified): Bumper covers, undertrays, EV battery enclosures, trim panels, dashboard substrates. We’ve shipped 80,000+ vacuum-formed parts annually to Tier-1 automotive suppliers. FMVSS 302 self-extinguishing material grades available on request.
Medical devices: ISO 13485-compliant production line. Equipment housings, surgical-equipment shells, hospital-cart panels. USP Class VI material grades available with full COA documentation.
EV charging: ASA and TPO outdoor-grade enclosures with UV stability validated to 10+ years. IP54-ready designs (sealing depends on your gasket spec). We make charging-station shells for European charging-network operators.
Industrial robotics: AMR and cobot body shells in ABS soft-touch finishes. Tolerances on sensor cutouts down to ±0.2 mm. Class A surface for premium consumer robotics.
Aerospace: Cabin sidewalls, interior fairings, equipment covers. Self-extinguishing FAR 25.853 grades available. Material certificates and traceability provided.
Industrial machinery: Machine guards meeting OSHA and ANSI B11.19 — typically 62% lighter than sheet steel and 38% cheaper than fabricated metal in the cases we’ve costed for customers.
Luxury retail: Display fixtures, point-of-sale units, signage. 6+ years on Louis Vuitton’s program.
Aerospace, agriculture, advertising, leisure also covered — see our /services page for the full list.
Why we’re different from the other 17 thermoformers in your search results
Honestly, the technology isn’t proprietary. ILLIG sells vacuum forming machines to anybody (we use them too). What’s hard is doing it consistently for 29 years in one factory, with the same engineering team, on parts that brands like LV will return to fault-find at the millimeter level.
What we do differently:
- Vertically integrated. We extrude our own sheet (ABS, HIPS, PETG, PC, PP, PE in-house). Our mold shop is on the same floor as our forming machines. We do CNC trimming, painting, silk screen, laser engraving, and assembly without sending anything outside. That means lead time and quality stay under one roof.
- 40+ vacuum forming patents. Specific tooling and process improvements developed over 29 years. Not the kind of thing that’s easy to copy.
- One of only a handful of “high-tech enterprises” in the Chinese vacuum forming sector (a Chinese government R&D classification — translates roughly to “we have to publish patents and reinvest in R&D to keep the status”).
- 5000 mm forming bed. Most factories cap at 2400–3000 mm.
- Genuine prototype-to-production model. We treat a 10-unit prototype run with the same engineering rigor as a 10,000-unit production run. We started doing prototype work in 2010 and it’s now ~25% of our project volume.
- In-house 6-person engineering team for DFM. Average 12 years’ experience. This is a real number — most B2B “DFM teams” we’ve audited at competitors are one application engineer who copy-pastes feedback templates.
- English-speaking sales engineering, based in Dongguan. Amy (our co-founder and Foreign Trade GM) has been in the role for 10+ years. You won’t be passed between three people who can’t answer a technical question.
What you should send us, and what we’ll send back
You send:
- 3D CAD file (STEP, IGS, STP, X_T preferred)
- Material requirements (or just describe the application — we’ll suggest)
- Annual volume estimate
- Target lead time (sample + first production)
- Any compliance requirements (ISO 13485, IATF 16949, RoHS, UL94, FAR 25.853, etc.)
We send back within 48 hours:
- DFM review (pass / fail / suggested geometry changes)
- Material recommendation with reasoning
- Tooling cost
- Per-piece price at your volume tier
- Lead time for sample and production
- Payment terms and Incoterms
- Optional: PPAP, FAI, control plan, capability study (Cpk) if your project requires them
If we can’t do the project well, we’ll tell you that too. We’ve turned down injection-molding-better projects, parts too small for our equipment to be efficient, and a few projects with timelines we couldn’t meet.
Frequently asked questions
Q: Do you really have a 1-unit minimum?
Yes. We do 1-piece prototype runs on MDF tools starting at $200. Most engineers send us a part for design validation before committing to production tooling. The price per piece on prototypes is higher (per-unit economics don’t kick in until 50–100 units), but you get a real, tested part in your hands in two weeks.
Q: How long until I get a real quote?
48 hours from the moment you send a complete drawing. If the file isn’t dimensioned or there are geometry questions, we may come back with one round of clarifying questions, which adds a day.
Q: Will you sign an NDA?
Yes. Mutual NDA before any drawing review. We have a template, or we’ll sign yours.
Q: Do you ship to the US? Europe? Australia?
Yes — about 60% of our 2025 production went to those three regions. Standard sea freight 25–35 days. Some customers use DDP terms so customs and import duties are on our side; others prefer FOB Shenzhen and handle import themselves.
Q: Can you handle painting and assembly?
Yes. PU paint (matte, gloss, soft-touch, color-matched), silk-screen printing, pad printing, laser engraving, EMI shielding, ultrasonic welding, foam insertion, and sub-assembly are all in-house.
Q: What’s your defect rate?
First-pass yield averages 96–99% on production runs after the first article is approved. Our highest-volume program (Louis Vuitton, 6 years) ships at 99%+ on a multi-stage QC process.
Q: Do you do twin-sheet forming?
Yes — for hollow parts like fuel tanks, double-walled enclosures, and structural panels.
Q: Can you provide PPAP / IATF 16949 documentation?
Yes. Level 3 PPAP, FAI, control plans, capability studies, ISIR — all available for automotive and medical projects.
Q: How do I know you’re a real factory and not a trading company?
Visit. We host 30+ customer audits per year — typically scheduled around your travel through Hong Kong or Shenzhen. We can also do a live video factory tour on request.
Q: What’s the cost of changing material between two production runs?
If the tool stays the same: just the cost of the new sheet (and possibly different drying / heating cycles, but no tooling rework). This is one of the underrated advantages of vacuum forming over injection.
Get started
Send a drawing. We’ll come back with a real number in 48 hours, or tell you why this isn’t a vacuum-forming project.
Email: [email protected]
WhatsApp: +86 138 2578 0422
LinkedIn: /company/ditaiplastic
Address: Dongguan, Guangdong, China (visits welcome — bring drawings, not just business cards)
Send Drawing for Free DFM Review →
[Secondary: Use our online cost calculator → /thermoforming-cost-calculator/] →
Sources & references (for engineers who like to verify)
Industry data referenced on this page:
- Heavy gauge thermoformed plastics market sizing: Mordor Intelligence — Heavy Gauge & Thin Gauge Thermoformed Plastics Market (CAGR > 5.5% over 5 years to 2030)
- Global thermoformed plastics market projection to USD 77.12B by 2035: Precedence Research, 2026
- Asia-Pacific accounts for the largest share of the thermoformed plastics market and the highest CAGR through 2030: Grand View Research, 2025
- Vacuum forming vs. injection molding cost crossover at ~3,000 units/year: Xometry resources and Premium Parts cost guides, 2025–2026
- 2025 US tariff impact on injection mold pricing (steel and aluminum): Jaycon Injection Molding Price Guide 2025
- B2B procurement decision-making: 60% of decision happens before vendor contact: DemandWorks 2026 B2B marketing trends in engineering
Standards referenced:
- IATF 16949:2016 — Automotive Quality Management System
- ISO 9001:2015, ISO 14001, ISO 45001 — Quality, Environmental, Occupational Health & Safety
- ISO 13485 — Medical Devices Quality Management
- ANSI B11.19 — Performance Criteria for Safeguarding (machine guards)
- OSHA 1910.212 — Machinery guarding
- FMVSS 302 — Flammability of Interior Materials (US automotive)
- FAR 25.853 — Aircraft cabin material flammability
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