Last updated: May 2026 | Read: 9 minutes | Written by: Amy Zou, Operations Director at DitaiPlastic
This page compares two heavy-gauge thermoforming manufacturers I get asked about regularly: Ray Products (Ontario, California) and our own factory, DitaiPlastic (Dongguan, China). I run DitaiPlastic, so yes — this is a comparison published by us. I’ll keep it honest. Ray Products is a 76-year-old shop with real depth in cleanroom and large-part work. We’re 28 years old with our own strengths in cost, materials flexibility, and Asia-Pacific supply. Neither one is the right answer for every project.
If you’re an OEM engineer or procurement lead trying to decide which factory to qualify, this page gives you the breakpoints we’ve seen in our own customer conversions.
Quick Answer: Which One Fits Your Project?
| Your Project Looks Like This | Better Fit |
|---|---|
| Cleanroom-formed medical equipment housing, ISO 14644 Class 8 | Ray Products |
| Heavy-gauge industrial enclosure, 1,000-30,000 units/year, cost-sensitive | DitaiPlastic |
| U.S. defense / aerospace requiring TAA-compliant sourcing | Ray Products |
| EV charging housings, robotics shells, automotive interiors — 100-50,000 units/year | DitaiPlastic |
| $25K+ tooling budget per SKU, OK with 8-12 week mold lead times | Ray Products |
| Multiple SKUs (5-30 variants) where tooling cost compounds | DitaiPlastic ($2-8K aluminum molds) |
| Customers split across North America, Europe, and Asia-Pacific | DitaiPlastic (60% export footprint) |
Company Snapshots
Ray Products
- Founded: 1948
- HQ: Ontario, California, USA
- Facility: ~200,000 sq ft
- Specialty: Heavy-gauge industrial thermoforming, cleanroom-grade medical equipment housings, transportation interiors, military and aerospace parts
- Certifications: ISO 9001, AS9100 (aerospace), ISO 14644-1 cleanroom
- Strengths: Long U.S. operating history, ISO 14644 cleanroom capability, TAA-compliant sourcing, large-press capacity, mature engineering team
- Best for: U.S. medical, aerospace, defense, and transportation OEMs that need domestic manufacturing with cleanroom or AS9100 compliance
DitaiPlastic
- Founded: 1997
- HQ: Dongguan, Guangdong, China
- Facility: 20,000 m² (~215,000 sq ft)
- Specialty: Heavy-gauge thermoforming (3-12mm sheet), large parts up to 5000×2500mm, automotive and EV charging interiors, robotics body shells, ambulance OEM conversions
- Equipment: 16 thermoforming machines, 28 CNC trimming stations, 15 5-axis CNCs, in-house paint booth
- Certifications: ISO 9001:2015 active; ISO 13485 and IATF 16949 audits in progress for 2026; ISO 14001
- Customer signals: Tier-2 supplier to programs at Louis Vuitton, Guerlain (LVMH), Cartier, Foxconn, Wistron, KTC, Hisense
- Best for: Heavy-gauge industrial OEMs, low-to-medium volume programs, multi-SKU product lines, global supply chain SKUs where Asia-Pacific distribution makes sense
Side-by-Side: 14 Capability Comparisons
| Capability | Ray Products | DitaiPlastic |
|---|---|---|
| Sheet thickness focus | 1-12mm (heavy-gauge specialist) | 3-12mm (heavy-gauge specialist) |
| Maximum part size | Large, exact figures per quote | Up to 5000 × 2500 × 1000mm |
| Cleanroom forming | Yes — ISO 14644 Class 8 | Cleanroom packaging on request; not full-cleanroom forming |
| Aerospace compliance | AS9100 certified | Not currently AS9100 certified |
| Automotive compliance | Available | IATF 16949 audit in progress 2026; supplies ambulance and special-vehicle OEMs |
| Tooling cost | $15,000-$50,000 (CNC aluminum or epoxy) | $200-$8,000 (CNC aluminum) |
| Tooling lead time | 6-10 weeks typical | 5-10 days |
| Minimum order | Typically 500+ for production | 50 units |
| Annual volume sweet spot | 5,000-100,000 units/year | 100-50,000 units/year per SKU |
| Materials offered | Standard heavy-gauge plus specialty (FR, ESD, antimicrobial) | ABS, PC, PETG, HDPE, PP, HIPS, ASA, PMMA, ABS-FR |
| Secondary operations | 5-axis CNC trim, painting, assembly, screen printing | 5-axis CNC trim, painting, assembly, EMI shielding, screen printing |
| U.S. tariff exposure | None (U.S. manufactured) | Subject to Section 301 (7.5% typical for HS 3926.90) |
| DFM review turnaround | Per quote schedule | 24 hours from STEP/IGS receipt |
| Sample lead time | 3-5 weeks | 7-10 days (epoxy/aluminum prototype molds) |
Cost Walkthrough: A 1,000mm × 700mm ABS Industrial Enclosure
I’ll use a real example we quote often. Project specs: 6mm wall thickness, 5,000 units/year, painted finish, IATF 16949 documentation not required.
| Cost Component | Ray Products (U.S.) | DitaiPlastic (China) |
|---|---|---|
| Tooling (one-time) | $22,000-$38,000 | $2,800-$5,200 |
| Per-part price (paint-finished) | $24-$36 | $11-$17 |
| Freight to U.S. East Coast | $0.50-$1.20/unit (domestic LTL/truck) | $1.30-$2.00/unit (ocean FCL, palletized) |
| Section 301 tariff (HS 3926.90, 7.5%) | None | $0.80-$1.30/unit |
| Landed price per part | $24.50-$37.20 | $13.10-$20.30 |
| 3-year program cost (5K/yr units only) | $367,500-$558,000 | $196,500-$304,500 |
| 3-year program cost (with tooling) | $389,500-$596,000 | $199,300-$309,700 |
Typical 3-year savings via DitaiPlastic on this size of program: $190,000-$285,000. The single biggest driver is the tooling delta ($17K-$33K saved per SKU). For programs with 5+ SKUs, the math compounds quickly.
These numbers come from quotes we’ve delivered in 2025-2026 against U.S. competitor pricing customers shared with us during qualification. Your actual quote will vary based on material grade, certification needs, and order pattern.
When Ray Products Is the Right Choice
If any of these apply to your project, Ray Products is likely the better fit:
- You need ISO 14644 cleanroom forming. Class 8 cleanroom thermoforming is rare. Ray Products has it. We don’t run cleanroom forming today — we offer cleanroom packaging on request, which is a different thing.
- Your contract requires AS9100 aerospace compliance. Ray Products is AS9100 certified. We’re not. If you need it, that decision is already made.
- U.S.-only manufacturing is a procurement mandate. Government contracts, certain defense work, and some pharmaceutical packaging programs require domestic sourcing. Section 301 tariffs and TAA compliance settle this for you.
- You’re past the SKU iteration phase and your part design is locked. The $15-50K tooling investment makes economic sense when you know the design won’t change for 3-5 years.
- Lead time on every reorder is mission-critical. Domestic shipping saves you 2-4 weeks of ocean freight on each production run.
When DitaiPlastic Is the Right Choice
If any of these match your situation, we’d like a chance to quote:
- Heavy-gauge industrial parts in the 200-5,000mm range — automotive interiors, EV charging station enclosures, robotics body panels, medical equipment housings (non-sterile), industrial control cabinets.
- Annual volume 100-50,000 units per SKU. This is the band where U.S. tooling amortization gets painful. Our $2-8K aluminum molds change the math.
- Multiple SKUs (5-30 variants). Every SKU you add multiplies the tooling cost differential. Customers with full product lines see the biggest savings here.
- You’re still iterating designs. An aluminum mold modification takes us 2 days and a few hundred dollars. A U.S. steel mold modification typically takes 4-6 weeks and $3-8K. If your design isn’t final, this matters.
- Your customer base is global. 60% of our production already ships to North America, Europe, Korea, and Southeast Asia. We handle export documentation routinely.
- You want a tier-2 supplier alongside your existing U.S. shop. A lot of our customers run dual-sourcing — Ray Products (or similar U.S. shop) for critical SKUs, DitaiPlastic for cost-sensitive SKUs and global distribution.
Where We’ve Done This Work
Ambulance Interior Panels (Korean OEM)
32-panel interior system per vehicle, converting commercial vans into ambulances. 100 vehicles per year, 3 years and counting, zero rework. ABS-FR (flame retardant) material to meet medical vehicle fire safety. Full case study →
EV Charging Station Housings (European CPOs)
Body panels for AC and DC fast-charging stations. ASA (UV-stable), HDPE, and PC-ASA blends. 6-10mm wall thickness, 1,500×1,000mm typical size. Designed for outdoor operation, -30°C to +50°C, 5+ year UV exposure. EV charging capability →
Autonomous Mobile Robot (AMR) Shells
Body panels for warehouse AMRs and cobots in 4-6mm ABS. Painted in customer-specific colors. EMI shielding application available for parts with internal electronics. Robotics manufacturing →
Medical Equipment Housings (Non-Sterile)
CT scanner shrouds, monitor housings, diagnostic equipment covers, and surgical instrument cases. ISO 9001 production with full material traceability. ISO 13485 audit in progress for 2026. We do not currently form parts in a cleanroom — for sterile-barrier work, Ray Products or a similar cleanroom shop is the right call. Medical equipment thermoforming →
How to Run a Real Side-by-Side Evaluation
If you’re seriously qualifying both factories, here’s the four-step process I’d recommend (this is what our customers tell us they did before choosing us):
- Confirm fit on basics. If you need AS9100 or ISO 14644 cleanroom, stop here — you need Ray Products or a comparable U.S. shop. If your project is heavy-gauge industrial in the 100-50,000 units/year band, both factories can quote, and you should send both an RFQ.
- Request DFM reviews from both. Send your STEP or IGS file to both factories. From us, you’ll get a DFM report within 24 hours, with material recommendation, tooling cost, per-part pricing at three volumes, and lead times. Compare the depth and specifics of each response.
- Order a 50-unit pilot from each. This is the only way to compare actual quality. Compare First Article Inspection (FAI) reports, surface finish, dimensional accuracy on critical features, and edge quality after CNC trim.
- Choose the right tool for the SKU. Most of our largest customers don’t replace their U.S. supplier — they split SKUs. U.S. for certifications-critical or low-volume legacy parts; DitaiPlastic for cost-sensitive or multi-SKU programs.
Questions We Hear from Procurement Teams
Is DitaiPlastic a low-cost substitute for Ray Products?
Not exactly. We’re a different shop with a different profile. We’re cheaper on tooling and per-part because our labor and overhead structure is different — but the cost advantage isn’t the whole story. We’re also stronger on materials flexibility (we run more material families than most U.S. shops) and on global distribution (we ship to 30+ countries routinely). On cleanroom and AS9100, Ray Products is clearly stronger.
How do tariffs change the math?
Section 301 tariffs on thermoformed plastic parts from China are currently 7.5% for HS 3926.90 (most heavy-gauge formed parts) and up to 25% for some classifications. Check your specific HS code at USITC.gov. Even at the 25% tier, the tooling cost gap ($15-40K per SKU) usually dominates the math for medium-volume programs.
What’s the lead time risk?
Realistic delivery to U.S. East Coast: 5-10 days tooling + 1-3 weeks production + 2-4 weeks ocean freight = 5-8 weeks from PO to delivered. Ray Products typical lead time is 7-12 weeks (6-10 weeks tooling + 1-2 weeks production + same-day domestic shipping). Net difference on first delivery: roughly a wash. On reorders, U.S. wins by 2-3 weeks per cycle.
How does DitaiPlastic handle quality?
First Article Inspection (FAI) report on every new SKU. In-process visual inspection every 100 parts. 100% inspection on critical dimensions per the customer drawing’s tolerance callouts. Sample-based inspection on cosmetic features per AQL 1.5 (industrial) or AQL 0.65 (medical equipment housings). All material lots traceable to manufacturer certificate.
Can I tour the DitaiPlastic factory?
Yes. We host customer visits routinely — Korean, European, and U.S. engineering teams come through once or twice a quarter. We can also do a live Zoom factory tour within 15 minutes of request if you want to verify production capacity before traveling. Book a factory tour →
What if I want to qualify both factories?
That’s smart procurement. Send the same RFQ to both. Compare DFM responses side by side. Run pilot orders at both. You’ll have your answer within 8-10 weeks at minimal cost — well under the cost of a single wrong sourcing decision.
Who at DitaiPlastic handles new customer projects?
I do. Amy Zou, Operations Director. New customer DFM reviews come to my desk personally for the first 3-5 projects. After we’ve worked together, you get a dedicated account engineer. Direct line: [email protected].
Next Steps
If Ray Products is the right fit for your project, visit them at rayproducts.com to request a quote. They’re a strong U.S. partner with deep cleanroom and aerospace experience.
If DitaiPlastic might be the right fit for a heavy-gauge industrial program, here’s what happens next:
- Email your STEP or IGS file plus an annual volume estimate to [email protected].
- Within 24 hours, you’ll receive a DFM review report with material recommendation, tooling cost, per-part pricing at three volumes, and projected lead times.
- Within one week, we can ship a prototype mold and first articles for your team’s evaluation.
- Within four weeks, we can deliver a full pilot run (50-1,000 units, your choice).
Send Your 3D File for Free DFM Review →
Page reviewed by Amy Zou, Operations Director, DitaiPlastic. Updated annually based on current tariff schedules, customer feedback, and competitive pricing data. Last review: May 2026. Spotted an inaccuracy? Email me directly at [email protected] — I personally maintain this page.