When I select a profile system for a project, I’m often asked: «Why not just take profile from the biggest factory? Everything there should be reliable.» The logic is understandable. A big factory means a lot of equipment, a lot of engineers, a lot of money. What could go wrong?
The China Zhongwang story is the best answer to that question. In the 2010s, it was the world’s second-largest manufacturer of industrial aluminum profiles. The company operated the most powerful presses on the planet, its founder was the richest man in China, and its shares traded on the Hong Kong exchange. Today the group has gone through bankruptcy, its shares have been delisted, and its core assets have passed to a new owner.
Let me be upfront. I have never worked with Zhongwang profile, and this article is not a product review. It is an analysis of a company that says a great deal about the aluminum market as a whole. All figures have been verified against open sources, and I note the year they refer to. Data from 2015 cannot be presented as the state of affairs in 2026.
The Key Point to Understand Up Front: Zhongwang Is Not a Window Brand
Before telling the history, let me explain one fundamental thing. Otherwise the entire article will be read incorrectly.
Zhongwang was never a company that sells finished window or facade systems for private homes. It is not an analog of Schuco, Reynaers, or Alutech. Today the company describes itself as a manufacturer of industrial aluminum with headquarters in Liaoyang, Liaoning Province, specializing in high-precision large-cross-section profiles for transportation, machine building, and industry.
To make clear where glazing fits into this picture, let me show the path of aluminum from ingot to window in your home:
alloy → profile extrusion → heat treatment → machining → coating or anodizing → system development → window fabrication → installation.
Zhongwang occupied the first half of this chain: alloy, extrusion, heat treatment, partial machining, and coating. The second half — system development, hardware, gaskets, fittings, testing, fabrication, and installation — is the work of the system house, the fabricator, and the installation crew.
So when I talk about «window quality,» I mean the result of the entire chain. Perfect aluminum from the world’s best press will not make a warm window if the thermal break in the system is poorly designed or the gaskets are chosen incorrectly. I’ve written about this in articles on installation and IGUs: a window is a system, not a piece of metal.
How It All Began
The company’s founder is Liu Zhongtian. His biography reads like a movie script. According to Chinese sources, in 1978 a 14-year-old Liu borrowed 200 yuan and started trading timber in the Changbai Mountains. Later he worked in chemical manufacturing, plastics, and real estate in Hong Kong.
In 1993, Liu founded Liaoning Zhongwang together with the Liaoyang aluminum products plant and a Hong Kong partner. They started, as nearly all Chinese extruders did, with construction profile. In 1994, the company entered the domestic market primarily with architectural aluminum, and by 1999 it began building a national distribution network.
It is interesting that the construction segment at Zhongwang was serious. According to older data from the Chinese Baidu encyclopedia, Liaoning Zhongwang had powder and fluorocarbon coating lines from Italy and Japan, five Swiss lines for producing thermally broken profile, and three Italian wood-grain finishing lines. Capacity for civil construction profile reached 300,000 tons per year. In other words, the company knew how to make thermally broken window profile.
The Pivot to Industrial Aluminum
The company made its key decision in the early 2000s. According to management, starting in 2003 Zhongwang began a business transformation and focused on high-tech industrial profile. And in 2009, the company launched a 125 MN press, which at the time was the largest in the world.
Why industrial profile? Because it is more expensive and higher-margin. A subway car body or an electric bus frame involves complex large cross-sections that only a handful of plants in the world can make. Competition is lower, prices are higher.
And Zhongwang excelled at this. The company became a strategic supplier of aluminum profile for high-speed train and metro car bodies to the Chinese giant CRRC. It worked with electric vehicle and bus manufacturers, and among its partners were Volvo, BYD, Chery, FAW, and Yutong.
Scale at Its Peak: Numbers That Boggle the Mind
Whenever people talk about Zhongwang, they always start with the presses. And that is justified.
In 2012, the company ordered two 225 MN presses from Taiyuan Heavy Industry with key components from Germany, paying 707 million yuan. At the time of the order, these were the largest presses of that type in the world. 225 meganewtons is roughly 22,500 tons of force. For comparison: at Fenglu, which I covered in a previous article, the most powerful press is rated at 20,000 tons.
According to the industry portal AL Circle, as of 2018 the group had more than 90 extrusion lines, of which 22 were heavy-duty lines of 75 MN and above, and total annual capacity approached 2 million tons. In 2017, extrusion accounted for 88% of the company’s revenue and 96% of gross profit.
The company website now lists more than 100 extrusion lines, of which 23 are heavy-duty lines of 75 MN and above, plus two ultra-heavy 225 MN presses. All dies were made in-house, and the foundry allowed casting alloys from the 1xxx to 7xxx series. For context: window profile is typically made from 6xxx-series alloys, while 7xxx is high-strength alloy used for aviation and specialty equipment.
Why Presses and Alloys Matter for Glazing
Since we have already touched on presses, let me explain what of this actually matters for windows and facades. These parameters are worth understanding for anyone choosing profile, regardless of the manufacturer.
Geometric accuracy. The profile must match the drawing with minimal tolerance. If the wall is thinner than designed, the profile will deflect under the weight of the IGU. If the gasket groove is slightly wider, the gasket will fall out and the window will start to leak air.
Straightness and dimensional stability. A six-meter facade mullion must be straight along its entire length. A few millimeters of warp turns into a misalignment of the entire curtain wall.
Strength after heat treatment. After extrusion, profile is quenched and aged. This determines whether it can withstand wind load and the weight of the glass. If the heat treatment is off, the profile will be softer than designed, even if it looks indistinguishable from the outside.
Surface quality. On a premium project, profile is visible from all sides. Die lines, streaks from the die, and pits after coating turn into visible defects that cannot be fixed.
Compatibility with coating. The alloy and surface preparation must be suitable for anodizing or powder coating. Otherwise, after a few years the coating will begin to peel or change color.
Batch repeatability. If profile for a single facade arrives in two batches, they must match in shade and dimensions. Shade variation between batches is one of the most unpleasant problems I encounter on projects.
Powerful presses make it possible to produce large and complex cross-sections. But everything listed above depends not on the power of the press, but on production discipline: control of alloy, dies, temperature, speed, and heat treatment. That is exactly why certificates and test reports must be checked for the specific plant and the specific batch, not for the reputation of the group.
The Exchange, Billions, and International Expansion
In May 2009, Zhongwang held an IPO in Hong Kong worth 1.26 billion dollars — the largest listing in the world that year. Liu Zhongtian’s net worth was estimated at 24 billion yuan at the time, making him the richest man in China.
The company then grew through very large investments. From 2011, Zhongwang began building aluminum rolling production in Tianjin and invested more than 3.8 billion dollars in equipment and buildings.
In 2016–2017, international expansion began. In 2017, Zhongwang acquired the German company Aluminiumwerk Unna, a manufacturer of high-quality extruded aluminum, and the Australian aluminum superyacht shipyard SilverYachts.
The most high-profile deal was supposed to be the one with the American company Aleris — a producer of rolled aluminum, including for aviation. In August 2016, Liu Zhongtian’s structure Zhongwang USA signed an agreement to acquire Aleris for approximately 2.33 billion dollars. But the deal required approval from the US Committee on Foreign Investment (CFIUS). In July 2017, the committee raised concerns, and on November 12, 2017, the agreement expired. Aleris was later acquired by Novelis.
US Charges: Aluminum Disguised as Trays
In parallel with the expansion, a story unfolded that ultimately dealt a heavy blow to the company’s reputation.
In 2019, the US Department of Justice accused Zhongwang of evading anti-dumping duties of 1.8 billion dollars. According to the indictment, aluminum profile was disguised as trays. The company denied the charges.
The scheme, according to investigators, worked like this: profile subject to duties since 2011 was turned into «trays» and stored in warehouses in Southern California. In 2021, six affiliated companies were found guilty, and a US court ordered them to pay 1.83 billion dollars.
For the glazing market, one takeaway matters here. Product origin and compliance with trade rules are not a formality. If a supplier operates at the edge of the rules, a shipment can be held at customs, and project timelines will be broken. For a private client with a house with no windows, that is a disaster.
The Crisis: From Subsidiary Troubles to Delisting
In 2021, the problems came to the surface. The timeline looks like this.
October 2021. Zhongwang announced that its subsidiary and Liaoning Zhongwang Group entities were experiencing serious operational difficulties. In December of that year, the company was removed from the Hang Seng Index.
March 2022. The company announced that its 2021 annual report would be delayed, and trading in its shares remained suspended.
September 2022. The Shenyang court accepted creditor applications for reorganization of Liaoning Zhongwang Group and 15 other companies. On September 20, the court ordered the consolidation of an already 253-company group into a single reorganization proceeding.
March–April 2023. The Hong Kong exchange decided on delisting because the company had not published financial statements since 2021. The last day of trading was April 12, 2023.
The scale of the debt was enormous. According to Chinese sources, by the end of 2020 China Zhongwang’s debt reached 67 billion yuan, while cash on hand was only 363 million. English-language sources state plainly that the group essentially grew on borrowed money.
Where the Company Stands Today
Here I need to be especially careful, because the situation is complex.
In November 2024, the state-owned Xiangyu Group from Xiamen was designated the preferred investor in the Zhongwang reorganization. The plan was to create a joint venture with capital of 4.3 billion yuan to buy out the core aluminum assets. The group’s financial assets — banking, insurance, and trust stakes — had already been separated by that time, and only 12 aluminum companies were included in the new structure.
At that point Zhongwang had four business segments. Primary aluminum production with a capacity of 750,000 tons, extrusion with a capacity of over 1 million tons, rolling with a capacity of 1.8 million tons, and deep processing for electric vehicles, rail transport, and aluminum furniture.
Ten days later, the public company Xiamen Xiangyu unexpectedly declined its 690-million-yuan stake. But this did not mean the deal was off: the parent Xiangyu Group retained its role as the reorganization investor and its intention to buy and control the «new Zhongwang.» According to Chinese sources, a company was established in Liaoyang at the end of 2024 that took over the core aluminum assets. I found this information only in secondary sources, so I present it with caution.
The founder himself, according to Chinese press reports, is in detention on several charges.
So it appears that the plants and presses have not physically gone anywhere and can continue operating under new owners. But this is now a different company, with different management and different obligations. For a client who signed a long-term contract with Zhongwang in 2018, this is a completely different company than the one they negotiated with.
What the Zhongwang Story Teaches the Glazing Market
Now to the main point. Why should a specialist in aluminum glazing study the history of an industrial extruder? Because it yields quite practical conclusions for any client.
Big Capacity Does Not Guarantee Stability
Zhongwang was larger than any system house I work with. The best presses in the world, a full production cycle, a stock exchange listing. And none of this saved the company from bankruptcy, because stability is determined by finances and management, not by tonnage.
When I’m shown photos of a giant workshop and a table of capacities, that’s fine. But it is not an answer to the question of whether the supplier will still be around in 15 years when you need to replace a gasket or a sash.
Windows Are Bought for Decades
Glazing lasts 30–50 years. Throughout that time, you need someone on the other side: a supplier of gaskets, fittings, spare profiles, documentation. If the system is unique and the supplier disappears, you are left with a house in which windows are difficult to repair.
That is why I always look not only at the system’s specifications, but also at the ecosystem around it: who holds stock in Russia, how many years the system has been on our market, whether compatible components from other manufacturers can be selected.
Certificates Are Verified by Plant, Alloy, and Batch
A large group may have a dozen plants with different equipment and different levels of control. A certificate from one facility does not automatically extend to the others. That is why I always ask: at which facility was the profile made, from which alloy, what heat treatment, is there a test report for this specific batch.
Product Origin Must Be Transparent
The «trays» story shows that trade risks fall on the buyer as well. A transparent supply chain, clear customs clearance, and compliance with import rules matter more than a small saving.
Price per Kilogram Is Not the Main Criterion
Aluminum profile is often compared by price per kilogram. But for glazing, that figure means little. The system is what matters: geometry, thermal break, gaskets, fittings, testing, software for the fabricator, warranty, and spare parts. A cheap kilogram of profile easily turns into an expensive window if any of these are missing.
How I Vet a Supplier
After stories like Zhongwang, I developed a checklist I apply to any new supplier — Chinese, European, or Russian.
First, I look at how many years the company has been operating specifically in the Russian market, who its distributor is, and whether completed projects can be visited. Then I find out who holds stock of components and whether their availability is guaranteed in 10 years. I check whether the system has compatible equivalents for gaskets and fittings in case the supplier goes away.
For large projects, I look at financial transparency: does the company publish statements, are there any news about lawsuits, debts, or audits. That is half an hour of searching that can save you from big problems.
And finally, documentation. Catalogs, detail drawings, test reports, a database in Logikal or another program. If you have a complete set in hand, even if the supplier disappears, your fabricator will be able to source solutions for repair.
My Conclusion
Zhongwang was a company that in the 2010s had everything: the world’s most powerful presses, a full production cycle, major clients like CRRC and Volvo, a stock exchange listing, and billions in revenue. And despite that, it went through accusations of duty evasion, a billion-dollar fine in the US, a failed Aleris deal, the bankruptcy of 253 group companies, and a delisting.
For the glazing market, the takeaway is simple. The scale of a factory is a production capability, not a guarantee of reliability. Windows are bought for decades, and one must evaluate not only the product but also the company: its finances, transparency, presence in your market, and willingness to be accountable for the system in 10–15 years.
So when someone offers you profile «from the biggest factory,» ask three questions. Who developed the system? Who will be accountable for it in ten years? And what will you do if that supplier is gone?
If you want to go over a specific proposal, write to me. I can help you figure out which questions to ask the supplier and what to look for in the documents.
