Supplier Spotlight: Lac Hao Electronic Technology Vietnam — CNC Milling, Injection Molding & In-House CMM Under One Roof

For US procurement teams sourcing precision machined components and plastic housings from the same supplier, multi-process capability is a direct cost and risk reducer — fewer vendor qualification events, simpler logistics, unified inspection responsibility. Lac Hao Electronic Technology Co., Ltd. is a Vietnam factory that delivers exactly that: CNC milling (multiple machines), injection molding, CNC lathe, and — most importantly — an in-house CMM (Coordinate Measuring Machine) for full GD&T dimensional inspection. The ability to machine, mold, and then CMM-verify under one roof is rare at this factory scale in Vietnam.

This is our eleventh Supplier Spotlight — a series where we walk US procurement managers through the actual audited factories inside Dewin's Vietnam network. Every photo is from a real in-person audit visit by our on-ground team. No stock images. No anonymous supplier listings.

Previous spotlights: Bueno Technology (CNC), Altop Precision Die Casting, NAPEC (CNC + CMM), HDP Precision Mechanical, Minh Quang Multi-Process, Eguchiseiko Die Cast, Hirata Precision Industrial, Huynh Duc Multi-Process, Lidovit Digital Fasteners, and Ming Chuan Injection Molding.

Factory at a Glance

What We Saw on the Factory Floor

1. Main Workshop — Multi-Process Production Floor

The main workshop at Lac Hao runs CNC milling, lathe, and injection molding operations under one roof — a production layout that enables tight coordination between machined and molded components. The floor shows organized equipment placement, material staging at workstations, and a clean production environment consistent with a factory managing multiple process types simultaneously. For US procurement teams, multi-process workshops are a practical advantage: when your BOM has both machined metal parts and plastic housings, qualifying a single Vietnam factory beats managing two separate vendors with independent lead times and inspection chains.

2. CMM — In-House Coordinate Measuring Machine

The CMM at Lac Hao is the inspection instrument that sets this factory apart from most Vietnam CNC shops operating at this scale. A Coordinate Measuring Machine performs contact-probe or scanning measurement of a machined part in 3D space, generating dimensional data against GD&T callouts from engineering drawings: position, concentricity, flatness, perpendicularity, true profile. This is the measurement method required for formal First Article Inspection (FAI), PPAP submission, and process capability (Cpk) documentation.

For US procurement teams sourcing precision-machined components, the difference between a factory with a CMM and one without is a difference in risk category: a CMM-equipped factory can provide documented measurement data per engineering drawing, while a factory relying on hand tools (calipers, micrometers, dial indicators) cannot measure positional tolerances, complex profiles, or multi-feature relationships at all. Lac Hao's in-house CMM means dimensional verification happens at the factory — not at your receiving dock.

3. CNC Milling — Multiple Machining Centers

Lac Hao operates multiple CNC milling machines — vertical machining centers for 3-axis milling of prismatic parts: housings, brackets, plates, blocks, enclosures. Multiple machines provide production flexibility: parallel runs of different part numbers, dedicated setups for high-mix/low-volume work, and capacity buffer for volume programs. The machines show active use — coolant lines, fixture plates, and ongoing jobs visible in the workshop photos from our site visit.

For US buyers sourcing CNC-milled aluminum or steel precision parts — enclosure bodies, motor housings, instrument panels, structural brackets — a factory with multiple milling centers provides both capacity reliability and the ability to maintain dedicated fixtures for repeat orders without teardown between runs.

4. Injection Molding — Plastic Production Integrated with Machining

Lac Hao's injection molding capability, co-located with CNC machining, enables single-supplier sourcing of mixed metal-plastic assemblies. Plastic components requiring precision-machined metal inserts, or plastic enclosures that pair with machined structural frames, can be produced and quality-verified at one facility. This is the practical version of "BOM consolidation" — not a strategic slide in a pitch deck, but actual production capability that eliminates a supplier management layer from your supply chain.

For US procurement teams buying sub-assemblies that include both CNC-machined metal frames and injection-molded plastic bodies (common in industrial controls, automation equipment, and electronic instrumentation), Lac Hao's combination of processes under one CMM-equipped roof means a single point of quality accountability, not a blame-passing exercise when a fit-up problem appears.

5. CNC Lathe — Precision Turning for Rotational Components

The CNC lathe at Lac Hao handles precision-turned components — shafts, bushings, threaded fasteners, rotational housings, and insert pins for overmolding. Combined with the milling and injection molding capability, the lathe enables the full geometry range required for complex mechanical assemblies: prismatic milled bodies, rotational turned shafts, and plastic housing elements — all CMM-verified, all from one factory.

6. Finished Products & Warehouse

Finished parts at Lac Hao show the output of the multi-process capability: precision machined components with clean surface finishes and defined lot control in the warehouse. Organized, labeled warehouse storage is an indicator of basic inventory discipline — ensuring that CMM-inspected, approved parts don't get mixed with non-conforming product before shipment.

Cost Comparison: Lac Hao (Vietnam) vs China + Section 301

CNC-machined parts from China fall under HTS Chapter 84 and carry a 25% Section 301 tariff. Injection molded plastic parts (HTS Chapter 39) and electronic components (HTS Chapter 85) are equally penalized. Vietnam-origin parts are fully exempt across all three chapters.

Table is illustrative. Actual savings depend on HTS classification, part complexity, annual volume, and tooling amortization. Dewin provides detailed cost analysis per project.

On $400K annual spend in CNC-machined and molded components from China, the Section 301 tariff alone adds ~$100K to your import bill. Consolidating that spend to a Vietnam multi-process factory like Lac Hao eliminates that tariff entirely — and often reduces ex-factory pricing as well given Vietnam's lower labor cost base.

Dolphin Audit: 5-Pillar Assessment

Every factory in Dewin's Vietnam network is evaluated against our 50-point Dolphin audit framework. Here's how Lac Hao scores:

Is Lac Hao Right for Your Parts?

How to Source from Lac Hao Through Dewin

1. Send your 2D/3D drawings and BOM — part files in STEP/DXF/PDF, GD&T callouts clearly marked, material specifications (aluminum alloy, steel grade, plastic resin), surface finish requirements, and annual volume
2. We run the factory match — Dewin evaluates your parts against our 179+ audited factories, including Lac Hao for mixed machined/molded precision work
3. Landed cost comparison — we model Vietnam vs your current China source with Section 301 tariff fully loaded into the math
4. First Article Inspection with CMM report — T1 samples with dimensional measurement data against your drawing callouts
5. Production with Dewin on-ground inspection — pre-shipment QC including CMM spot-check, visual inspection, and packaging audit before export
6. Export documentation — Certificate of Origin confirming Vietnam origin for Section 301 exemption, inspection certificate, packing list, commercial invoice