How to Verify an EN590 Diesel Exporter Before You Send an LC

In the high-stakes world of bulk fuel trading, sending a Letter of Credit (LC) is one of the most serious financial commitments you can make. An LC essentially guarantees payment to the seller upon presentation of compliant documents. Once issued, it is difficult and expensive to amend or cancel. This makes thorough verification of the EN590 diesel exporter absolutely essential before you instruct your bank to open the LC.

Here is a practical, battle-tested checklist that experienced traders and procurement teams use in 2026 to verify an EN590 diesel supplier and protect themselves from costly fraud or delivery failures.

1. Verify the Company’s Legal Existence and Track Record

Start with basic corporate due diligence:

• Request full company registration documents, including Certificate of Incorporation, business license, and tax registration.

• Check the company’s age — legitimate exporters usually have at least 5–7 years of operating history.

• Confirm the registered address matches the one they provide. Use Google Earth or local business registries to verify the physical office or terminal location.

• Look up the directors/shareholders on sanctions lists (OFAC, EU, UN) and adverse media searches.

A newly registered company with no trading history that suddenly offers large volumes of EN590 is a major red flag.

2. Confirm Direct Access to Product (Not a Broker Chain)

Ask the direct question: “Are you the refinery mandate, terminal owner, or a trader/broker?”

Legitimate suppliers will clearly state their position and provide supporting evidence such as:

• Allocation letter or nomination from a recognized refinery

• Storage agreement (TSA) with a reputable tank farm (e.g., in Rotterdam, Fujairah, Houston, or Singapore)

• Recent tank receipt or injection report

If the supplier claims “we have direct allocation” but cannot provide any proof beyond vague promises, assume they are part of a long broker chain. Long chains dramatically increase the risk of non-performance.

3. Demand Recent, Verifiable Proof of Product (POP)

A professional exporter should be willing to share (after basic NDA or company profile verification):

• Fresh SGS or Intertek inspection report from the loading terminal (not older than 7–10 days)

• Tank storage receipt showing product availability

• Recent Bill of Lading or loading confirmation from previous shipments

Beware of suppliers who demand an ICPO (Irrevocable Corporate Purchase Order) or any upfront payment before sharing POP. This is a classic scam tactic.

4. Validate Quality Specifications and Testing

EN590 10ppm ultra-low sulfur diesel has very specific parameters. Request a detailed Certificate of Analysis (COA) covering at least:

• Sulfur content ≤ 10 ppm

• Cetane number ≥ 51

• Density at 15°C (820–845 kg/m³)

• Cold Filter Plugging Point (CFPP) appropriate for destination climate

• Flash point, viscosity, and distillation range

Insist that the COA comes from an independent laboratory (SGS, Intertek, or Bureau Veritas) at the loading terminal. Never accept supplier-generated documents without third-party verification.

5. Check Loading Terminal and Logistics Capability

Ask for the exact loading port and terminal name (e.g., Rotterdam, ARA range, Fujairah, Houston, etc.). Legitimate suppliers will provide:

• Terminal storage agreement

• Loading procedure and timeline

• Vessel nomination process

Verify that the terminal is reputable and has a history of exporting EN590. Some smaller or unknown terminals are used in fraudulent schemes.

6. Review Payment Terms and Risk Allocation

Secure payment structures protect both parties. Acceptable instruments include:

• Irrevocable Documentary Letter of Credit (DLC) payable at sight against compliant documents

• Standby Letter of Credit (SBLC) as performance guarantee

Red flags include:

• Demands for advance payment or TT before loading

• “Dip and pay” arrangements without proper inspection rights

• Pressure to use non-standard or high-risk payment methods

A trustworthy exporter will accept buyer-nominated inspection at the loading terminal and allow title transfer only after quality and quantity confirmation.

7. Perform Reference and Reputation Checks

Contact at least 2–3 recent buyers who have worked with the supplier. Ask about:

• On-time delivery performance

• Quality consistency

• Responsiveness during issues

• Overall professionalism

Also check industry forums, LinkedIn, and trade networks for any negative feedback or scam warnings.

8. Engage Third-Party Verification

For any transaction above $500,000, budget for professional due diligence. Hire a reputable inspection company to:

• Verify the supplier’s terminal access

• Confirm product availability

• Witness pre-shipment sampling and testing

This small investment can prevent massive losses.

Final Checklist Before Opening the LC

Before you send the LC instruction to your bank, confirm:

• The exporter has provided fresh, independent SGS/Intertek reports

• You have verified their legal existence and terminal access

• Payment terms are secure and balanced

• You have performed basic reference checks

• A third-party inspection company is appointed for the loading

If any of these points are missing or unclear, do not open the LC. It is far easier to walk away before the LC is issued than to try to unwind a problematic transaction afterward.

In the EN590 diesel trade, patience and thorough verification are your best defense. The few extra days you spend properly vetting a supplier can save you weeks of stress and potentially hundreds of thousands of dollars.

Protect your capital. Verify thoroughly. Only then open the LC.