1. Why EU Buyers Choose Vietnam for OEM Injection Projects

Outsourcing plastic parts manufacturing to Southeast Asia is no longer just about lowering costs. For EU buyers, it’s about finding a technically capable, certification-ready, and delivery-reliable partner.

This case study shows how Huashuo Plastics Vietnam delivered a full-cycle OEM injection molding project for a European Tier 1 automotive client—from co-design to EU-compliant shipment—all within 9 weeks.

2. Project Overview

• Client: European Tier 1 automotive supplier

• Product: Dual-component dashboard ventilation louver (PP+TPE overmolded)

• Volume: 480,000 pcs/year

• Requirements: RoHS & REACH compliance, Class A surface, <±0.1mm tolerance

• Timeline: 9 weeks from DFM to delivery

3. DFM Analysis & Mold Development

Before tooling, Huashuo’s engineering team optimized the part design with:

• Draft angle correction for smooth ejection

• Modular slider system added to louver detail

• Warpage simulation via Moldflow

• Tool steel: 1.2344 (core/cavity) + beryllium copper inserts

• Mold config: 2-cavity, hot runner, 60s cycle time

DFM feedback loop was completed in 5 days, enabling fast mold cut with minimal rework.

🔗 Related Blog: How Mold Fit Impacts Injection OEM Precision

4. Material Selection & Compliance

• Base Material: PP-GF20, UL-rated, RoHS compliant

• Soft Overlay: TPE-S, Shore A 45, automotive spec

• Color: Jet black, ΔE < 0.6

• Flame Rating: UL94-HB passed

• Compliance: RoHS 3.0 + REACH SVHC (<0.1%)

Every material lot was batch-logged with QR-coded packaging, linked to COA and mechanical tests.

5. Surface Quality & Dimensional Control

To meet Class A visual and tactile standards:

• SPI-A2 mirror polish on mold cavity

• Controlled injection pressure to avoid flow lines

• Balanced cooling loop across mold

• Post-mold visual inspection under ISO-standard lighting

Measured Accuracy (200 pcs):

• Width: ±0.07mm

• Height: ±0.08mm

• Warpage: <0.15mm on flat surface

• 100% passed OEM tactile and visual inspection

🔗 Related FAQ: How Do We Control Surface Defects in Injection Parts?

6. Packaging, Logistics & Documentation

• Cleanroom-packed in anti-static PE bags

• Loaded into custom PP hollow sheet crates

• Labeling includes: COA, batch code, destination info

• Documents include: EUR.1, REACH declaration, MSDS, CE/RoHS labels

Timeline Summary:

7. Client Feedback

“One of the smoothest offshore plastic projects we’ve executed in years. The Huashuo team acted like an extension of our own engineers—despite being 9,000 km away.”

Following success, the client commissioned a second project: glovebox hinge set, now in FAT (final acceptance test).

8. What EU OEM Buyers Should Learn

• Early-stage co-engineering shortens project cycle

• Mold build quality = long-term dimensional consistency

• EU compliance is achievable with the right factory partner

• Vietnam combines cost-effectiveness + technical precision

Huashuo Plastics Vietnam offers full-service OEM plastic injection molding, from mold design to export-ready parts—fully aligned with EU, North American, and Southeast Asian compliance standards.

📞 Need EU-compliant parts? Contact our engineering team today.

🚩FAQs

1. Can a Vietnam-based injection molding factory meet EU compliance standards?

Yes. With the right supplier, RoHS 3.0, REACH SVHC, UL94, and material traceability can all be met. Huashuo Vietnam provides full documentation, including COA, MSDS, EUR.1, and supports third-party audits.

2. How do you ensure dimensional accuracy in custom injection parts?

We use a combination of Moldflow simulation, precision mold machining (≤0.005mm), and in-process QC (including 3D CMM measurement and visual inspection under ISO lighting). Our typical deviation is under ±0.08mm for Class A automotive parts.

3. What’s the typical lead time for an OEM injection project in Vietnam?

A standard mid-complexity OEM project typically takes 35–45 working days, including:

• 5 days for DFM + co-design

• 20 days for mold build

• 6 days for sample iteration

• 10–12 days for mass production and QC

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4. Do you support dual-material or overmolded injection parts?

Yes. We’ve successfully delivered 2K overmolded parts using PP+TPE, ABS+TPU, and PC+Silicone combinations. Our mold shop supports hot runner and insert-overmolding designs, with simulation and pilot run validation.

5. Can I track batch-level traceability of each part delivered?

Absolutely. Each shipment is packaged with a QR-coded label linked to raw material source, mold number, cycle time, inspection report, and compliance documents. This ensures full auditability for OEM and regulatory needs.