This list comes with a caveat the others don't need, and it is more useful than the list itself: Vietnam's aluminium extrusion sector does not publish the way tile and quartz do. There is no listed pure-play extruder with audited capacity in the public domain, and most "top 10 aluminium companies" pages you will find are directory listings rather than measured rankings.

So rather than invent a league table, here is what is actually documented — and then how to evaluate anyone else who quotes you.

How this list was put together

Documented facility scale and verifiable presence only. Where a company's capacity is not public, we say so rather than estimate it. And as with our other market lists, this is a public market landscape, not our supplier list — inclusion is neither an endorsement nor an indication of any commercial relationship.

The documented names

1. Xingfa Aluminium (Vietnam operations). The Guangdong-headquartered extruder — one of the larger aluminium profile manufacturers in the region — operates manufacturing in Vietnam as part of its international footprint. Worth understanding clearly if origin matters to your duty position: where the profile is actually extruded and substantially transformed is the question, not the parent company's flag. See Origin Is the Product.

2. Do Thanh Aluminum. Its plant has expanded to around 130,000 m², and it is cited among the top five aluminium extrusion factories in the country by facility scale.

3. Nam Sung Aluminum. Operates a roughly 40,500 m² facility with an integrated set-up — metallurgical furnace, extrusion workshops, electrostatic coating and plating. Integration matters here: coating done in-house is one less handoff to manage.

4. Tien Dat Aluminum. More than twenty years in the sector and a long-standing position supplying aluminium and building materials domestically.

5. The contested fifth — and why we won't fill it. Several capable extruders and system houses could occupy this slot, and the public evidence doesn't let us rank one above another honestly. Padding the list would make it look tidier and trust it less. Instead, use the criteria below.

How to judge an aluminium supplier yourself

For a façade, window or curtain-wall package, the extruder is genuinely only half the question:

  • System, not sections. You are buying a system — profile geometry, thermal break, gaskets, hardware, drainage — engineered to your wind load. A profile supplier and a system house are different businesses; know which one you are talking to.
  • Test evidence to your market's standard. AS 2047 (windows) and AS 1288 (glass) with NATA-recognised lab reports for Australia; EN 14351-1 with CE/UKCA and a Declaration of Performance for the EU/UK; NAFS (AAMA/WDMA/CSA 101) and NFRC ratings for North America. Ask for the report, not the claim.
  • Alloy, temper and coating spec in writing — 6063-T5 versus T6, powder coating to a named standard with a stated film thickness, anodising class.
  • CBAM, if you are shipping to Europe. Aluminium is a covered good, and since January 2026 the embedded-emissions data your supplier can produce is a real cost variable. See The Carbon at the Border.
  • Never buy on a kilo price. It is the fastest way to receive profiles that meet a weight and fail a wind-load test.

Our aluminium & glass capacity note has the sector figures.

Sources & data notes

Xingfa Aluminium's Vietnamese manufacturing presence, Do Thanh Aluminum's ~130,000 m² plant and its citation among the country's top five extrusion factories, Nam Sung Aluminum's ~40,500 m² integrated facility and Tien Dat Aluminum's 20+ year track record are drawn from 2024–2026 company and industry directory sources. This sector publishes materially less verifiable data than tile or quartz: there is no audited public capacity ranking, and the order above reflects documented facility scale rather than measured market share. Figures are indicative — verify capacity, certification and test evidence directly with any company before relying on it. Inclusion is not an endorsement and does not indicate a commercial relationship with Make in Vietnam or VITD.

Aluminium and glass is the group where the specification does more work than the supplier list. Send us one BOM with your wind loads and glazing spec and we return a system-level proposal with the test evidence attached — within 48 hours.