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Injection Molding Vietnam
Custom Plastic Parts & Tooling
Production-grade injection moulding from Bình Chánh District, Ho Chi Minh City. Tooling cut in-house from P20, H13, or S136 steel — every T1 shipment includes a full CMM dimensional report and material certificate at no charge. ISO 9001:2015 certified. Shot weight 5g to 2,000g. Single to 16-cavity molds.
Parts shipped from Ho Chi Minh City clear US customs at 0% Section 301 tariff — versus 25–145% on equivalent China-origin components. EU buyers benefit from EVFTA zero-duty access. Australian buyers from AANZFTA preferential rates.
Request a Technical Quote → Talk to an Engineer →Alt: “Injection mold cavity — VNcontX, Bình Chánh District, Ho Chi Minh City”
100% in-house — tooling, moulding, inspection. No brokers. No sub-suppliers. You deal with the factory directly at every stage.
100% FAI on every order. Zeiss Contura CMM report, material certificate, and Cpk/Ppk data ship with every lot. ISO 9001:2015 certified.
0% Section 301 (US) · EVFTA zero-duty (EU) · AANZFTA preferential (AUS). Certificate of Origin prepared in-house, every shipment.
Why Buyers Are Moving Injection Moulding Out of China
The Section 301 tariff regime has added 25–145% to the landed cost of plastic injection moulded parts from China depending on HS code. Vietnam-manufactured parts carry none of that exposure. Whether your procurement team quotes “injection moulding” or “injection molding”, parts ship tariff-free from HCMC under the applicable trade agreement — EVFTA for the EU, AANZFTA for Australia, and Section 301 exemption for the US. The tariff gap alone recovers tooling cost on most programs within the first production run.
For a full cost comparison including tooling amortization, see: Injection Moulding Cost: Vietnam vs China →
Equipment & Tooling Specifications
All injection moulding tooling is cut in-house at the Bình Chánh facility. No subcontracting. Steel selection is matched to required shot life at the DFM stage — P20 for prototype and medium-run programs, H13 for extended production, S136 or NAK80 for corrosive resins and mirror-finish cavities.
Tooling Steel Selection
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P20
— Prototype and medium-run molds. 300,000+ shot life. Lower cost, faster machining cycle. Standard choice for design validation and low-volume production. -
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H13 (SKD61)
— High-volume production molds. 500,000+ shots. Excellent thermal fatigue resistance for high-speed, fast-cycle injection moulding programs. -
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S136
— Corrosion-resistant. 1,000,000+ shots. Specified for PVC, flame-retardant grades, and halogenated resins. -
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NAK80
— Pre-hardened, mirror-polish capable. Optical components and Class-A cosmetic surfaces. 1,000,000+ shots. - ▸ Side Actions & Lifters: Fully supported — hydraulic and mechanical, single or multiple per tool.
- ▸ Insert & Overmoulding: In-house. Brass inserts, SS pins, stamped contacts. TPE/TPU overmould over rigid substrates.
Production Process — 10 Steps from Order to Shipment
Every plastic injection moulding program at VNcontX runs through the same documented 10-step sequence. No steps are skipped for low-volume orders. CMM inspection occurs at Step 5 (FAI) and Step 8 (Final Inspection) as standard.
- 01 Order Confirmed PO received, NDA countersigned, project folder opened. File access restricted to assigned team.
- 02 Drawing Review 2D drawing checked against STEP/IGES. Tolerance feasibility, material compatibility, and surface finish calls reviewed.
- 03 DFM & Quotation Written DFM report issued: wall thickness, draft angles, gate location, parting line, sink/weld line risk. Tooling quotation with lead time returned within 1–3 business days.
- 04 Material Procurement Resin sourced from certified suppliers. Material certificates collected and filed before production start.
- 05 FAI / First Article Inspection 100% FAI on every program. T1 samples measured on Zeiss Contura CMM. Full dimensional report issued against drawing before mass production approval.
- 06 Mass Production Approved parameters locked. Scientific molding parameters (fill pressure, hold time, cooling profile) documented per cavity.
- 07 In-Process Inspection First-off and periodic checks every production run. Cpk/Ppk tracked on critical dimensions. Defect classification per drawing.
- 08 Final Inspection 100% visual inspection. CMM sampling on critical features. Cosmetic defect review per agreed AQL.
- 09 Packing & Labeling Parts packed per customer specification. ESD-safe packaging available. Lot traceability labels applied. Packing list issued.
- 10 Shipment & Export Docs Commercial invoice, packing list, Certificate of Origin prepared in-house. Air freight LAX 2–3 days. Sea freight US West Coast 18–22 days.
Specialty Injection Molding Processes
All specialty processes run fully in-house. No subcontracting to third-party molders.
Prototype vs Production Tooling
Steel grade and cavity configuration determine shot life and per-unit cost. Most programs start on a prototype mold and scale to the same steel cavity — no full retooling required for volumes under 300,000 shots.
| Prototype MoldFast · Agile | Production MoldScale · Quality | |
|---|---|---|
| Pre-sale DFM review | ||
| CMM report included | ||
| Mold flow analysis | ||
| SPI A1–D3 surface finish | ||
| Side actions & lifters | ||
| Insert / overmolding | ||
| Hot runner system | — | |
| Multi-cavity (up to 16) | 1–2 cavity | 1–16 cavity |
| Cpk / Ppk data | — | |
| Tool steel | P20 / H13 | H13 / S136 / NAK80 |
| Shot life | 300,000+ | 500,000–1,000,000+ |
| T1 lead time | 15–20 days | 20–25 days |
| Tooling cost | $ | $$ |
| Per-unit part cost | $$ | $ |
Quality & Inspection Protocol
ISO 9001:2015 certified. Every production program runs through a fixed inspection sequence documented in the quality plan issued at order confirmation. CMM equipment: Zeiss Contura (coordinate measuring machine) and Mitutoyo calibrated instruments.
- ✓ 100% FAI on every order: CMM report, material certificate, dimensional report against drawing.
- ✓ Cpk/Ppk reporting: Process capability data issued on all production mold programs as standard.
- ✓ In-process checks: First-off and periodic sampling every run. Defects classified per drawing callout.
- ✓ Lot traceability: Material cert, production date, cavity number, and CMM data retained per lot.
- ✓ Export documentation: Commercial invoice, packing list, Certificate of Origin — prepared in-house.
- ✓ OTD 98.4% across all orders. Lead time clock starts at DFM sign-off, not order placement.
See: Injection Molding Tolerances Guide → · Low Volume Injection Molding Guide →
IP & Confidentiality
All design files — STEP, IGES, 2D drawings — are stored on an internal server with access restricted to personnel assigned to that specific program. No files are shared with sub-suppliers because no sub-suppliers are used.
Injection Molding Guides & Technical Resources
Ready to Get a Tooling Quote?
Upload your STEP file and 2D drawing. VNcontX returns a written DFM report and formal quotation within 1–3 business days. Factory-direct — no sales layer, no intermediaries.
Request a Technical Quote → Talk to an Engineer →Related services: Prototype Injection Molding Vietnam · Overmolding & Insert Molding Vietnam · Custom Injection Molding Vietnam · Medical Injection Molding Vietnam · Tooling & Die Making Vietnam · Injection Molding for US Companies · Injection Molding Australia · Our Manufacturing Facility · Wire EDM Machining Vietnam · Quality Management Vietnam