Tax Crackdowns and Weak Demand Strain China’s Aluminium Scrap

China’s secondary aluminium producers are caught between two pressures that are pulling the sector in opposite directions. Tax compliance inspections across Henan, Hunan, and other provinces are making properly invoiced scrap harder to source by the week, while the September peak season that producers were counting on has failed to arrive.

The result is a market that looks steadier on the surface than it feels underneath. ADC12 secondary alloy held at RMB 24,500/t through the week ending 24 September 2026, propped up not by demand but by rising raw material costs.

The import data adds a wrinkle. August scrap imports recovered 18.60% month-on-month to 141,800 tonnes after a four-month slide, yet cumulative volumes for January to August 2026 still sit 7.5% below 2025 levels. The partial rebound has not resolved the underlying squeeze on domestic supply.

Add the National Day holiday, which brings a short-term inventory drawdown that is easy to misread as a demand signal, and you have three distinct forces shaping the China aluminium scrap market heading into the fourth quarter. Here is what each one means for anyone tracking aluminium supply chains, and whether the import bounce marks a genuine turn or a temporary reprieve.

Tax crackdowns are reshaping who can source scrap and at what cost

The enforcement is happening on the ground right now. Tax compliance inspections across Henan, Hunan, and additional regions were expanding in scope as of the week ending 24 September 2026, according to Shanghai Metals Market (SMM), and the practical effect is that properly invoiced aluminium scrap is becoming genuinely scarce.

That scarcity has split the market into two prices. Invoiced, tax-compliant scrap is gaining price support because there is less of it to go around. Non-invoiced scrap, meanwhile, faces narrowing distribution channels, and some traders have been forced to discount to move inventory at all.

For downstream producers, the mechanism is not subtle. Stricter VAT invoice enforcement reshapes the scrap supply chain in four predictable ways:

• Raises compliance costs for small collectors and traders that once operated with minimal formal invoicing
• Concentrates legally invoiced scrap among larger, better-capitalised yards
• Forces secondary smelters to pay more for compliant material or switch part of their feedstock toward primary aluminium or imported alloy ingots
• Increases documentation and verification demands on downstream buyers such as die-casters and auto-parts producers

Higher compliance requirements drove up comprehensive raw material costs for producers during the week. The consequence shows up directly in ADC12 pricing.

The cost floor in action SMM ADC12 held flat at RMB 24,500/t throughout the week ending 24 September 2026, even as aluminium futures softened at points. Producers had little room to cut prices because compliant scrap procurement had become the effective floor beneath their costs.

Overseas ADC12 offers sat in the US$3,100 to US$3,200/t range, leaving import margins near breakeven and removing that as a pressure valve. The secondary aluminium sector operating rate came in at 53.3% for the week, low-to-mid range against historical peak-season norms.

China’s VAT invoice enforcement is not unique to aluminium scrap; the same compliance inspections reshaping copper scrap supply chains in 2026 follow an identical structural logic, concentrating legally documented material among larger yards and squeezing out informal traders who once operated below the documentation threshold.

What this tells you matters for anyone modelling secondary aluminium margins through Q4. The cost advantages of informal scrap sourcing are closing, and the compliance premium is now structurally embedded in ADC12 pricing. This is not a temporary friction to wait out; it is a repricing of the raw material that underpins the whole sector. Before assuming ADC12 margins recover, you need to account for a floor that enforcement has built and is unlikely to remove.

August’s import rebound masks a market still searching for equilibrium

Read the monthly numbers in sequence and the shape of the recovery becomes clear.

August rose sharply, but only back toward the middle of the range, still short of the May peak and 17.67% below August 2025. The July trough had a specific cause: inverted domestic-overseas price spreads and shipment delays choked off high-quality overseas scrap inflows. August’s recovery reflected resumed shipping schedules and restocking from Southeast Asian suppliers, not a fresh wave of end-use demand.

The cumulative picture is the one worth holding onto. January to August 2026 imports totalled roughly 1.243 million tonnes, down about 7.5% year-on-year, and the annual gap actually widened versus the January to July figure. A single strong month did not close it.

SMM was explicit that “multiple constraints suppress a sharp import rebound,” and characterised September imports as only “seen recovering marginally.” That framing tells you to treat August as a logistics-driven bounce rather than a demand turn.

Thailand’s rising share and the supplier concentration risk

Inside the recovery sits a structural vulnerability. Thailand shipped 34,124.96 tonnes in August, up 32.84% month-on-month though still down 21.47% year-on-year, lifting its share of total imports to 24.1%, up 2.6 percentage points from July.

The rest of the supply came from the UK, Japan, the US, and Portugal, a short list by any measure. Heavy reliance on a handful of countries raises exposure to their export policy shifts, quality rule changes, or freight disruptions.

The short list of aluminium scrap import suppliers serving China in 2026, dominated by Thailand, the UK, Japan, the US, and Portugal, reflects years of trade-flow consolidation that has left the supply side structurally exposed to any single-country policy shift or freight disruption.

For anyone monitoring the data, the read is to separate a logistics bounce from a demand recovery. The 7.5% cumulative shortfall tells a different story from the monthly headline, and Thailand’s growing dominance means the supply side remains one policy change or freight shock away from another dip.

A holiday inventory drawdown and a peak season that did not deliver

Start with the disappointment, because it explains everything that follows. The September peak season for cast aluminium alloy simply did not arrive. Meaningful demand release had yet to materialise by the week ending 24 September 2026, with downstream buyers holding to need-based, hand-to-mouth procurement rather than forward restocking.

Against that backdrop, the inventory numbers need careful reading. Cast aluminium alloy ingot social inventory fell to 31,800 tonnes during the week, down 2,700 tonnes month-on-month and ending a six-week consecutive buildup.

The number to read carefully Social inventory dropped to 31,800 tonnes, snapping six straight weeks of accumulation. The driver was a widening spot-futures spread and pre-holiday stockpiling, not a genuine pickup in end-use demand.

Several forces explain why the peak season fell flat:

• Inventory overhang from six weeks of buildup let buyers meet orders by destocking rather than purchasing aggressively
• Weak downstream sectors, including autos and construction-linked components, reduced call-off orders
• Margin and compliance pressure pushed buyers toward cautious, hand-to-mouth procurement
• Some end-users shifted toward primary aluminium where quality or traceability requirements tightened

Producer behaviour ahead of the holiday reinforces the cautious picture. Most secondary aluminium enterprises kept running through the Mid-Autumn Festival, but certain producers scheduled around three days of National Day stoppage. Enterprises broadly booked more holiday days in 2026 than in prior years, citing tight raw material availability, elevated procurement costs, and downstream clients’ own schedules.

On pricing, SMM A00 aluminium sat at RMB 24,240/t as of 24 September 2026, up RMB 60/t week-on-week. The differential between A00 and paint-free mixed extrusion scrap in Foshan ran around RMB 2,482/t, and against shredded tense scrap about RMB 1,261/t, with shredded tense scrap projected in a RMB 20,500 to 21,200/t range for the following week.

The takeaway for you is one of timing. The inventory drawdown looks constructive, but it is a pre-holiday technical adjustment, not a signal that demand has turned. A clean read on genuine recovery will not be available until post-holiday trading resumes and procurement patterns normalise in October.

What the rest of 2026 looks like from here

Two credible stories can be told from the same data, and they point in different directions.

The first, SMM’s view, treats August as a constrained technical rebound. With cumulative imports still down about 7.5% year-on-year and September expected to recover only marginally, this reading sees the recovery as cautious rather than decisive.

Secondary aluminium consumption trends through mid-2026 had been running at multi-year highs before the current regulatory and demand headwinds emerged, providing useful baseline context for gauging how far the sector has retreated from its recent peak operating conditions.

The second reading sees the early stage of normalisation. From this angle, Southeast Asian supply re-routing around earlier disruptions, with Thailand lifting its share to 24.1%, suggests trade flows are adapting and volumes could climb gradually, provided domestic prices stay supportive and policy risk does not intensify.

The risks that could stall a recovery are specific, and SMM flags four:

• A persistent year-on-year shortfall that leaves little cushion against any renewed price-spread inversion or macro slowdown
• Supply concentration in Thailand and a small group of other countries
• Potential broadening of the tax audit scope beyond current provinces
• Documentation and compliance brakes on high-quality overseas scrap inflows

For context, LME aluminium cash settled at US$3,242/t on 22 September 2026, eased from US$3,310/t on 16 September, so the price backdrop is steady rather than supportive of aggressive restocking.

The honest read is that the market sits at a decision point. Which story proves correct will be settled by enforcement decisions and post-holiday demand signals that are not yet visible, making this a moment for caution rather than conviction.

Three indicators to watch when China’s aluminium market reopens after National Day

Step back from the weekly noise and the market is neither collapsing nor recovering. It is suspended between regulatory pressure and demand disappointment, and the National Day holiday will obscure that tension before it resolves it.

For readers with direct exposure to aluminium supply chains or secondary producers, the window to position accurately is narrow: holiday-distorted October data will arrive before genuine Q4 signals do. Three watchpoints give a practical framework for reading it when it comes.

1. October import volumes against the August benchmark. Whether monthly imports sustain the 141,800-tonne August reading or revert toward the July trough near 119,600 tonnes will show if the recovery has legs or was a one-month logistics bounce.
2. ADC12 price at RMB 24,500/t. Watch whether the cost floor holds or softens as downstream buyers return from the break. A break lower would signal demand weakness overwhelming the compliance premium; a hold confirms the floor is structural.
3. Tax audit scope beyond Henan and Hunan. Any expansion into additional provinces would tighten compliant scrap availability further and push procurement costs higher regardless of demand conditions.

The direction of the next move depends on factors that are regulatory and demand-driven at once, not purely price-determined. The 53.3% operating rate is the baseline any recovery would need to lift from.

For readers wanting to contextualise ADC12 pricing within the broader global casting alloy market, our full explainer on aluminium casting prices and premiums covers how US Midwest premiums, tariff structures, and energy costs interact to set international price benchmarks that Chinese secondary producers compete against.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and forward-looking assessments are subject to market conditions and various risk factors.