Supplier Spotlight #24: Thanh Long Industrial Services Trade Company Limited
CNC fiber laser cutting + CNC milling + in-house 3D CMM coordinate measuring machine — all under one roof in Vietnam. 50-point Dolphin Audit verified. 16+ FTA markets covered.
Workshop overview — Thanh Long Industrial Services Trade Company Limited, Vietnam. Real factory photo taken during Dewin Dolphin Audit site visit.
(Laser / Mill / CMM)
Completed
Vietnam Exports
Factory Photos
What Dewin's Team Found On-Site
CNC Fiber Laser Cutting
High-precision fiber laser cutting system for steel and aluminum flat profiles. Confirmed operational with parameter control and cut-edge quality documentation reviewed on-site.
CNC Milling Machine
CNC vertical milling center for precision feature machining — pockets, bores, threads, and mating surfaces. Verified operational with inspection records confirmed on-site.
In-House 3D CMM
3D Coordinate Measuring Machine for full GD&T dimensional verification. Calibration records confirmed current. Actively integrated into the production quality workflow.
All photos taken on-site during Dewin Dolphin Audit visit. Real factory — no stock photography.
3D CMM vs. 2D VMM vs. Hand Gauges — Why It Matters for Laser + Milled Parts
The inspection tool matters as much as the manufacturing tool. Here's what each method can and cannot verify for fabricated and machined parts:
| What Needs Checking | 3D CMM (Thanh Long) | 2D VMM / Optical | Hand Gauges |
|---|---|---|---|
| Laser-cut hole position (true position) | ✅ Full 3D GD&T verification | ✅ 2D profile only | ❌ Cannot measure true position |
| CNC-milled pocket depth / flatness | ✅ Full Z-axis + flatness verified | ❌ Cannot measure depth | ⚠️ Depth gauge — limited accuracy |
| Surface perpendicularity / squareness | ✅ CMM datum-referenced check | ❌ Not possible | ⚠️ Square + feeler gauge — operator-dependent |
| FAI report (First Article Inspection) | ✅ Full ballooned drawing with CMM data | ⚠️ 2D features only | ❌ Limited — hand measurements only |
| PPAP Cpk statistical capability | ✅ CMM generates Cpk dataset | ❌ Not traceable | ❌ Not suitable for Cpk |
| Profile of a surface (laser cut contour) | ✅ 3D surface profile verification | ⚠️ 2D profile only | ❌ Cannot measure |
🔍 Dolphin Audit — Equipment & Capacity Pillar (Pillar 2) Verified at Thanh Long
During the Equipment & Capacity pillar of the 50-point Dolphin Audit, Dewin's on-ground team confirmed at Thanh Long Industrial:
- CNC fiber laser cutting machine — operational, cutting parameters documented
- CNC milling center — operational, tooling inventory and maintenance records reviewed
- 3D CMM — present, calibration certificate current, integrated into quality workflow
- Company identity verified via name plate and business registration
Physical on-site verification is the difference between Dewin audits and self-reported equipment lists on trade platforms.
50-Point Dolphin Audit — Thanh Long Industrial Results
| Pillar | Key Assessment Points | Finding | Global Buyer Relevance |
|---|---|---|---|
| 1. Facility & Safety | Plant layout, machine guarding, fire safety, 5S housekeeping | ✅ Organized workshop layout, clear safety signage | Ethical sourcing baseline; insurance compliance |
| 2. Equipment & Capacity | CNC laser cutter, CNC mill, 3D CMM — operational + calibrated | ✅ All three key assets physically confirmed | Real multi-process + metrology capability — not self-reported |
| 3. Quality Systems | Inspection workflow, NCR process, CMM integration, calibration schedule | ✅ In-process inspection documented; CMM in active use | Defects caught before shipment; FAI/PPAP capable |
| 4. Workforce & Management | English communication, org structure, technical drawing capability | ✅ Management responsive; English-capable for technical queries | Smooth drawing-revision communication; reduced misunderstanding risk |
| 5. Export Compliance | VCCI Form B eligibility, production records, material sourcing documentation | ✅ COO documentation capability confirmed | FTA eligibility confirmed — CPTPP / EVFTA / RCEP / UKVFTA markets covered |
FTA Market Coverage — Laser Cut & Milled Parts from Thanh Long
Vietnam's 16+ free trade agreements create preferential tariff access across major buyer markets. Parts exported through Thanh Long Industrial with valid CO documentation qualify for:
CPTPP
CO Form: CPTPP Certificate of Origin
0% on qualifying fabricated steel and machined aluminum parts for: Australia, Canada, Japan, Mexico, New Zealand, Singapore, UK.
Key advantage: Japan and Australia — high-quality manufacturing partners with zero FTA duty on Vietnam-origin precision components.
EVFTA
CO Form: EUR.1 or Statement on Origin
0% or phased reduction on steel articles (Ch.73) and machine parts (Ch.84) for EU27 buyers across 27 member states.
Key advantage: EU manufacturing OEMs seeking China+1 can access Vietnam parts duty-free for most fabricated categories.
RCEP
CO Form: RCEP Certificate of Origin
Preferential rates across 15 Asia-Pacific nations including China, Japan, South Korea, Australia, ASEAN. Largest FTA by GDP coverage.
Key advantage: Korean and Japanese OEMs with APAC supply chains access Vietnam-origin parts under RCEP preferential rates.
UKVFTA
CO Form: UKVFTA Origin Declaration
0% on many fabricated steel and aluminum categories for UK buyers post-Brexit. Mirrors EVFTA coverage for most industrial part categories.
Key advantage: UK manufacturers and distributors access Vietnam-origin parts without EU or China duty exposure.
Dewin vs Alibaba vs Trade Fair vs Direct Factory
| Factor | Dewin (Thanh Long) | Alibaba | Trade Fair Contact | Direct Factory |
|---|---|---|---|---|
| CMM physically verified | ✅ On-site confirmed + calibration | ❌ Self-reported | ❌ Unverified | ⚠️ You must verify yourself |
| Laser cutting capability confirmed | ✅ Machine operational, cut quality checked | ❌ Self-reported | ❌ Business card only | ⚠️ You must verify |
| FTA CO documentation managed | ✅ VCCI/CPTPP/EUR.1/RCEP managed | ❌ Not managed | ❌ Not managed | ⚠️ Factory-dependent |
| Pre-shipment AQL inspection | ✅ On-ground Dewin QC team | ❌ Separate extra cost | ❌ Your arrangement | ❌ Your arrangement |
| Real factory photos | ✅ 7 on-site photos from audit visit | ❌ Often stock or unverified | ❌ Marketing materials only | ⚠️ Photos may not reflect current state |
| English-speaking POC, 24hr response | ✅ Dedicated Dewin account manager | ⚠️ Varies by supplier | ⚠️ Trade show follow-up only | ⚠️ Factory-dependent |
How Dewin Sources From Thanh Long Industrial
RFQ & DFM Review
Submit your DXF/DWG files for laser-cut profiles and CNC-milled features. Dewin reviews for DFM — laser kerf, min hole diameter, milled tolerances — and confirms fit with Thanh Long's verified capabilities.
Factory Quote
Dewin requests pricing from Thanh Long with your full specification: material grade (steel/aluminum/stainless), thickness, tolerance requirements, surface finish, quantity tiers. CMM inspection included.
PO & CO Setup
PO issued. Dewin initiates Certificate of Origin documentation — VCCI Form B for US / CPTPP CO for Japan/Australia/Canada/UK / EUR.1 for EU — ensuring FTA tariff eligibility at your destination.
Production Monitoring
Dewin's on-ground team tracks production progress. Laser-cut profiles and milled features are inspected at key milestones. Photo and dimensional update reports shared with buyer on request.
CMM Inspection + PSI
3D CMM dimensional report generated for FAI or production approval — ballooned to buyer drawing. Pre-shipment AQL inspection per ISO 2859-1 Level II conducted by Dewin QC before container loading.
Shipment + Full Docs
Export packing, COO, material certs, CMM report, PSI certificate, commercial invoice, and packing list compiled. Forwarded to buyer's customs broker or freight forwarder for import clearance.
Frequently Asked Questions
What makes Thanh Long Industrial stand out among Vietnam fabrication factories? ▼
What FTA benefits apply to parts exported from Thanh Long Industrial? ▼
How does Dewin verify the CMM is actively integrated into the quality workflow? ▼
What documentation does Dewin provide for parts from Thanh Long Industrial? ▼
Source Laser Cut & CNC Milled Parts From Vietnam
50-point Dolphin Audit verified. 3D CMM inspection included. Dewin manages FTA CO documentation, on-ground QC, and pre-shipment inspection for your target market.