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Thư viện · Vụ việc đã kiểm chứng · Cập nhật hàng tuần

Thư viện vụ việc lừa đảo nhà cung cấp nhôm Trung Quốc

Tổng hợp các vụ việc giả mạo profile Xingfa, làm giả MTC, tráo hợp kim, lừa lớp phủ PVDF/PE trên ACP. Mỗi vụ đều có các red flag lẽ ra phải bắt được trước khi mất tiền.

24 vụ · đã kiểm chứngCập nhật hàng tuầnGửi vụ việc →
Cập nhậtMay 8, 2026 · Thư viện vụ việc đã kiểm chứng·NguồnTranh chấp hải quan công khaiBáo chí đưa tinHồ sơ MTC/SGS từ buyerHội đồng ngànhPhương pháp →
Vụ việc

24 vụ đã kiểm chứng

Mức độ HighBrazilspec-downgrade2025-10-01 · loss —

Brazil distributors warn of 'head-and-tail' aluminum + galvanized steel coating fraud

Brazilian flat-products distributors publicly reported widespread imports (largely China-origin) where only the head and tail of a coil meet declared coating thickness (e.g., aluminum-coated AZ150-200), while the middle is AZ40-60. One distributor estimates ~80% of irregular product in the local market. Failure surfaces only after 12-24 months of corrosion in field installs.

Red flag lẽ ra phải bắt được
  • ⚠coating-thickness gauge readings drop sharply 5-50m from coil end
  • ⚠MTC reports a single thickness value with no statistical sampling note
  • ⚠no QUALICOAT / SGS pre-shipment coating audit attached
  • ⚠price 8-15% below honest competitors with no efficiency justification
Mức độ HighUStransshipment-circumvention2025-07-11 · loss —

Disposable aluminum foil products · Vietnam + Thailand circumvention investigation 2025

U.S. Department of Commerce initiated anti-circumvention investigation into disposable aluminum products (foil containers) from Vietnam + Thailand. Petitioner alleges Chinese-origin foil is shipped to VN/TH for token finishing then exported to US to evade Chinese AD/CVD orders. Preliminary determination expected Dec 2025; final May 2026.

Red flag lẽ ra phải bắt được
  • ⚠VN/TH supplier's stated production capacity exceeds local raw-material availability
  • ⚠supplier began exporting to US within months of new AD/CVD on China
  • ⚠raw foil import records (UN Comtrade / GTA) show heavy China-origin coil into VN/TH plant
  • ⚠value added at VN/TH facility <10% of finished export value
Mức độ HighUStransshipment-circumvention2024-12-20 · loss —

Aluminum wire & cable from VN + KR · DOC affirmative circumvention determination

U.S. Commerce issued preliminary affirmative determinations of circumvention for aluminum wire & cable produced in Vietnam and South Korea using Chinese-origin aluminum input. Negative ruling for Cambodia. Effect: imports from VN/KR producers using Chinese aluminum become subject to the China AD/CVD order rates.

Red flag lẽ ra phải bắt được
  • ⚠VN/KR supplier's input aluminum invoiced from a China-based affiliate or unrelated trader
  • ⚠production process at VN/KR site is single-stage drawing only (no smelting/casting)
  • ⚠supplier cannot certify non-Chinese aluminum origin in writing
Mức độ HighGlobalbusiness-email-compromise2024-09-11 · loss —

BEC supplier-bank-detail swap on aluminum invoices · industry-wide pattern

FBI IC3 reports BEC losses reached US$2.77B in 21,442 incidents in 2024; cumulative since 2013 >US$55B. Pattern at aluminum + commodity buyers: attacker compromises supplier mailbox, lurks, sends a 'updated bank details' email mid-thread on the eve of a real T/T. Funds route through HK/UK/Mexico/UAE intermediary banks. By the time the legitimate supplier asks 'where's the payment?' funds are gone.

Red flag lẽ ra phải bắt được
  • ⚠supplier email on bank-detail change differs by one character from prior thread (e.g., extra dot, sub-domain swap)
  • ⚠new beneficiary name doesn't match supplier registered legal name
  • ⚠new bank country is HK / UK / UAE while supplier always invoiced from CN
  • ⚠request comes Friday afternoon CN time to delay verification
Mức độ HighUSuflpa-risk2024-09-01 · loss —

Kingtom Aluminio (DR) · CBP UFLPA Finding — aluminum extrusions seized at U.S. entry

U.S. Customs and Border Protection issued a Forced Labor Finding under UFLPA against Kingtom Aluminio S.R.L., a Chinese-owned extruder operating in the Dominican Republic. Effect: CBP seizes Kingtom-origin extrusions at all U.S. ports — not 'detention pending evidence', a Finding. Buyers using Kingtom face full-shipment loss + likely investigation of own supply-chain due diligence.

Red flag lẽ ra phải bắt được
  • ⚠supplier registered offshore (DR / VN / TH / MY) but ownership chain reaches a Chinese parent on UFLPA Entity List
  • ⚠billet/raw-material declarations missing or refer to Chinese smelters
  • ⚠supplier cannot produce non-Xinjiang sourcing affidavit signed by parent
  • ⚠'Made in DR' marking on a product line that previously shipped from China
Mức độ HighUS / EUcounterfeit-branding2024-06-01 · loss —

Thermal Grizzly thermal-compound counterfeits traced to Chinese aluminum-adjacent packaging

Thermal Grizzly publicly reported a wave of counterfeits using authentic-looking Chinese-sourced aluminum packaging + fake serial labels. Buyers paid genuine prices for re-filled product.

Red flag lẽ ra phải bắt được
  • ⚠packaging printing quality below brand spec
  • ⚠serial number verifies offline only
  • ⚠weight variance ±8%
Mức độ HighEU / USsupplier-substitution2024-06-01 · loss —

Thermal Grizzly · $46K loss · two Alibaba metals suppliers shipped fakes

German thermal-product brand Thermal Grizzly placed parallel orders with two Alibaba suppliers (one copper, one aluminum) to spread risk. Both shipped cheaper substitute metals failing spec testing. ~$46K total loss. Founder publicly documented the case to warn other small buyers; both suppliers retained Alibaba 'Verified' badges through the dispute window.

Red flag lẽ ra phải bắt được
  • ⚠supplier offers 'spread the risk by ordering from two of us' — both turn out related
  • ⚠samples ship from a different SKU/lot than production
  • ⚠XRF / spectroscopy on production differs from sample by >5% on alloying elements
  • ⚠supplier ignores or stonewalls metallurgy lab report when presented
Mức độ HighGlobalcertification-fraud2024-04-01 · loss —

ISO 9001 / 14001 certificates issued by de-accredited or non-existent CBs

Recurring pattern (and a 2024 IAF crackdown subject): 'ISO 9001' certificates from certification bodies that (a) never had IAF-MLA accreditation, (b) lost accreditation, or (c) don't exist. Certificate looks correct on PDF; verification against issuing-CB public registry returns 'not found'. Buyers who don't verify are paying a quality premium for nothing.

Red flag lẽ ra phải bắt được
  • ⚠certificate body name not in any IAF MLA member's directory (CNAS / UKAS / ANAB / etc)
  • ⚠certificate number format doesn't match the CB's published format
  • ⚠PDF lacks a working QR code linking to the CB's verification page
  • ⚠supplier cannot get a re-issued certificate with current date
Mức độ HighVN / ID / BRadvance-payment-theft2024-04-01 · loss —

30% deposit taken · supplier vanishes before shipment

A 'supplier' (often a trading shell set up 3-6 months prior) solicits inquiries at 10-15% below market, takes a 30% T/T deposit, and disappears. Recovery nearly impossible; SAMR registration turns out to be a paper company with registered capital unpaid.

Red flag lẽ ra phải bắt được
  • ⚠supplier registered within the last 12 months
  • ⚠registered capital shown but 实缴 (paid-in capital) near zero on 企查查
  • ⚠offer 8-15% below prevailing FOB without explanation
  • ⚠pushes for T/T only, refuses L/C
Mức độ HighGlobaladvance-payment-theft2024-01-01 · loss —

Off-platform payment redirect · Trade Assurance bypassed

Pattern across many small B2B buyers: supplier negotiates inside Alibaba Trade Assurance, then on the eve of payment requests T/T to a personal Hong Kong / Standard Chartered / DBS account 'because Trade Assurance is delayed'. The moment payment lands off-platform, all dispute protection vanishes. Supplier ships nothing or ships off-spec; recovery near-zero.

Red flag lẽ ra phải bắt được
  • ⚠supplier asks for payment to a personal name account, not the registered company
  • ⚠bank account country differs from supplier registration country
  • ⚠supplier offers 'small discount' for off-platform T/T
  • ⚠supplier cancels the Trade Assurance order claiming 'system error' minutes before sending bank details
Mức độ HighUSuflpa-risk2024-01-01 · loss —

UFLPA-flagged Xinjiang billet routed through Shandong re-melters

US CBP UFLPA enforcement expanded 2024 to cover aluminum. Some Chinese mills source primary billet from Xinjiang smelters on the UFLPA Entity List and route through non-Xinjiang re-melters, keeping the shipping paperwork clean but still flagged upstream. Detained at CBP entry.

Red flag lẽ ra phải bắt được
  • ⚠supplier cannot produce billet supplier declaration with entity names
  • ⚠supplier's own billet suppliers are themselves opaque holding companies
  • ⚠supplier unwilling to commit to non-Xinjiang billet in contract
Mức độ HighEU / USquality-divergence2023-11-01 · loss —

Sample vs. production batch alloy divergence

Buyers receive pre-order samples that test to spec, then bulk production arrives with different alloy composition or temper treatment. Recovery requires third-party XRF testing of sealed production batch before shipment.

Red flag lẽ ra phải bắt được
  • ⚠sample heat-lot number not shown on the production MTC
  • ⚠pre-order sample arrives hand-polished; production is mill-finish only
  • ⚠production MTC heat-lot doesn't match any sample lot
Mức độ HighGlobalspec-downgrade2023-04-01 · loss —

ACP: PVDF-claimed panels that are actually PE-coated

ACP (aluminum composite panel) labelled as 3-coat PVDF but is 2-coat PE, fails UV accelerated testing at 2 years vs 15+ for true PVDF. Cost difference $4-6/m² at the factory; multiplied by project m² buyers lose five-figure amounts.

Red flag lẽ ra phải bắt được
  • ⚠supplier reluctant to provide Kynar 500 resin supplier statement
  • ⚠QUALICOAT / SGS test result only covers coating 'adhesion', not 'fluorocarbon content'
  • ⚠cure-temperature on MTC below PVDF's 240°C minimum
Mức độ HighGlobaldocument-fraud2023-03-15 · loss —

MTC (Mill Test Certificate) forgery · bait-and-switch alloy substitution

Multiple buyers report receiving MTCs claiming 6082-T6 for shipments that tested as 6061 or off-spec 6063. Forged MTCs often reuse legitimate mill letterheads from photos found online.

Red flag lẽ ra phải bắt được
  • ⚠MTC missing mill seal in embossed (not printed) form
  • ⚠heat-lot number doesn't match mill's public format
  • ⚠mill contact on MTC unreachable at claimed number
Mức độ HighVietnamcounterfeit-branding2023-01-01 · loss —

Xingfa-branded window profile counterfeits in Vietnamese market

Widespread counterfeit Xingfa (兴发) window profiles sold in Vietnam by distributors with no factory link. Xingfa runs an official laser-engraved code system and public verification page — missing or non-verifying code is the primary tell.

Red flag lẽ ra phải bắt được
  • ⚠no laser-engraved anti-counterfeit code
  • ⚠alloy composition test returns 6061 not 6063-T5
  • ⚠weight-per-meter below nominal 3-5%
  • ⚠thermal-break polyamide color off-spec
Mức độ HighGlobalcertification-fraud2022-09-01 · loss —

ISO 9001 certificates from dissolved certification bodies recycled

Fake ISO 9001 certificates issued by certification bodies that either never existed, were de-accredited, or whose accreditation expired. IQNet / SGS / BV / TÜV public registries catch these — fraudulent suppliers rely on buyers not checking.

Red flag lẽ ra phải bắt được
  • ⚠certificate number does not verify on the issuing body's public registry
  • ⚠certification body not accredited by any IAF-MLA member
  • ⚠certificate PDF lacks embedded metadata from CB document system
Mức độ HighGlobaltrademark-squatting2022-08-01 · loss —

Trademark squatter blocks genuine mill on Alibaba + re-sells counterfeit

Squatters register legitimate Chinese mill brand names on Alibaba International + 1688 before the mill itself does. Buyers searching the brand hit the squatter's listings instead of the real factory. Counterfeit product then ships from a different, unknown source.

Red flag lẽ ra phải bắt được
  • ⚠Alibaba listing registered date post-dates mill's SAMR founding by years
  • ⚠listing contact doesn't match mill's published official email/phone
  • ⚠listing's 营业执照 shows trading company, not a factory
Mức độ HighUSduty-evasion2019-07-31 · loss —

China Zhongwang Holdings — $1.83B aluminum-as-pallets duty evasion conspiracy

Asia's largest aluminum extruder shipped 2.2 million 'pallets' to U.S. shell companies controlled by chairman Liu Zhongtian (2011-2014). The pallets were aluminum extrusions tack-welded together to evade ~400% AD/CVD duties on Chinese extrusions. A jury convicted six California-based corporate entities; ordered $1.83B restitution to U.S. customs.

Red flag lẽ ra phải bắt được
  • ⚠import declared as 'finished pallet' but unit weight far above any normal pallet (often 2-5×)
  • ⚠buyer in U.S. is a recently-formed shell with no inventory turnover
  • ⚠wholesale price below extrusion cost — no margin for 'finishing'
  • ⚠supplier is the same SAMR-related entity for years across multiple buyer shells
Mức độ HighGlobalwarehouse-receipt-fraud2014-06-01 · loss —

Qingdao port warehouse-receipt aluminum / alumina financing fraud

At Qingdao + Penglai bonded warehouses, the same metal stockpiles (~80,000 t aluminum ingot + 300,000 t alumina) were pledged as collateral to multiple banks and trading houses simultaneously via duplicated/fake warehouse receipts. International losses estimated >US$1.2B; Chinese banks exposed for ≥US$3B. Glencore, Mercuria, Citi, Standard Chartered all made claims; Mercuria-Citi settled in 2016.

Red flag lẽ ra phải bắt được
  • ⚠warehouse receipt issued by single operator without independent SGS/CCIC inspection
  • ⚠metal financed multiple times in short window — receipt serial pattern repeats
  • ⚠warehouse refuses on-site verification visit
  • ⚠deposit-taking bank cannot confirm physical re-counted inventory
Mức độ MediumEU / AEspec-downgrade2024-02-01 · loss —

Anodized layer 12μm delivered · 20μm spec'd and paid for

Anodic oxide layer thickness 12-15μm delivered when AA20 (≥20μm) is specified and paid-for. Only detectable by eddy-current gauge on the finished product. Common on large MX/AE architectural shipments.

Red flag lẽ ra phải bắt được
  • ⚠Qualanod certificate not on Qualanod public member list
  • ⚠MTC skips the anodized-thickness measurement line
  • ⚠price 3-5% below true AA20 suppliers
Mức độ MediumChina-domestic + EU/US (downstream)tax-fraud2023-06-01 · loss —

China VAT export-rebate fraud rings · aluminum products as vehicle

Chinese authorities periodically prosecute rings that fabricate aluminum-product export invoices to claim VAT export-rebate (出口退税) without real shipment. Side effect for foreign buyers: a Chinese supplier suddenly under tax investigation may have shipments held by Chinese customs, refuse to invoice, or lose its export license — disrupting deliveries even if buyer is uninvolved.

Red flag lẽ ra phải bắt được
  • ⚠supplier requests odd invoice patterns (e.g., over-invoicing of aluminum content) for a 'tax-optimization' reason
  • ⚠supplier delays customs clearance citing 'tax inspection'
  • ⚠Chinese 国家税务总局 (STA) public enforcement bulletins name the supplier or its parent
Mức độ MediumGlobalquantity-fraud2023-06-01 · loss —

Short-weight stuffing · 5-8% shortage under packing film

Container arrives with 5-8% less aluminum by weight than packing list. Concealed by stuffing bundles with spacer foam or oversized-pallet strapping. Discovered only on warehouse reweigh.

Red flag lẽ ra phải bắt được
  • ⚠loaded-container weight bill < packing-list claim
  • ⚠unusual spacer material between bundles
  • ⚠shipper refuses to provide yard weigh ticket
Mức độ MediumGlobaltrademark-squatting2023-03-01 · loss —

CNIPA trademark squatting · genuine mill blocked from its own brand abroad

Speculators monitor SAMR new-business registrations and CNIPA trademark filings of genuine Chinese aluminum mills, then race to register the same brand in target export markets (VN / ID / BR / EAEU). When the genuine mill begins exporting under its brand, customs detain its goods on the squatter's IP claim. Resolution can take 18-36 months in target jurisdiction.

Red flag lẽ ra phải bắt được
  • ⚠target-country trademark registered after CNIPA Chinese filing but before mill's export start
  • ⚠registrant is an individual or trading shell with no manufacturing assets
  • ⚠registrant's portfolio shows dozens of unrelated Chinese mill brands
Mức độ MediumGlobalbadge-misrepresentation2021-01-01 · loss —

'Alibaba Gold Supplier' badge is marketing, not verification

'Gold Supplier' on Alibaba International only verifies that the supplier paid Alibaba's annual fee + passed basic identity checks. It does NOT verify factory size, certifications, or export history. Repeatedly treated by buyers as proof of quality — it isn't.

Red flag lẽ ra phải bắt được
  • ⚠'Verified' without third-party audit report attached
  • ⚠factory photos on listing reverse-image-match other listings
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Câu hỏi thường gặp

Về thư viện vụ việc

How do you verify a fraud case before listing it?

Each case requires at least two of: (a) publicly filed dispute or press coverage, (b) MTC/SGS/spectro evidence submitted by the buyer, (c) customs record corroboration. Anonymous tips without corroboration are not listed. We contact the named seller for comment before publishing where possible.

Can I submit a case?

Yes. Email with: seller name, PO date, HS code, alleged issue, and any MTC/SGS/photo documentation. We will verify independently. False or malicious submissions result in permanent reporter ban.

Does listing a case mean all their products are fraudulent?

No. A case signals risk, not a blanket judgment. We publish the specific product, batch, and time — and always link to the seller's response when provided. Many sellers named in a case continue to serve buyers after remediation; some do not.