Physical commodity intermediation in agriculture, energy and metals.

GDK is a U.S.-based trade intermediary connecting qualified buyers with producers, refiners and exporters. Agricultural commodities of Brazilian origin; refined petroleum products and metals from established international origins.

Start an inquiry How we work

Markets

Three sectors, each sourced where it is strongest.

Agricultural products come from Brazil, where our producer relationships are deepest. Energy and metals come from established international origins, with seller identity, load port and inspection confirmed before any offer is issued.

Agricultural

Grains · Oilseeds · Proteins · Biofuels
Brazilian origin · FOB or CIF

  • Grains & OilseedsSoybean, wheat, corn, rice, beans and pulses
  • Sugar & Vegetable OilsICUMSA 45 / 150, VHP; 12 vegetable oil variants
  • Proteins & Brazil FlavorsChicken, beef, pork, fish, eggs; coffee, cacao, açaí
  • Cotton & BiofuelsCotton lint, ethanol, biodiesel B100

Producer-level origination. Load-port inspection by SGS, Bureau Veritas or Intertek.

Energy

LNG · LPG · Crude · Refined products
[Origins] · FOB or CIF

  • Liquefied GasesLNG; LPG (propane, butane, mix)
  • Crude OilMultiple grades, Brent- and WTI-linked pricing
  • Refined ProductsDiesel EN 590 (10 ppm), Diesel D6
  • AviationJet A-1, ASTM D1655 / DEF STAN 91-091

Refinery or appointed seller named before contract. Q&Q inspection at load port.

Metals & Minerals

Precious · Ores · Base metals
[Origins] · FOB or CIF

  • PreciousGold doré, 80–90% Au, with assay certificate
  • Industrial OresIron ore (Fe 62–65%), bauxite
  • Base MetalsPrimary aluminium P1020, copper cathodes Grade A
  • SettlementLBMA / LME reference, independent assay

Producer, mine or smelter named before contract. Independent assay at loading.

Full specifications and minimum volumes →

What we do

A short chain between producer and buyer.

We work as close to the source as possible, qualify both sides before any introduction, and stay involved through contract, inspection and shipment.

Origination

Brazilian mills and producers for agriculture; refiners and their appointed sellers for energy; producers and smelters for metals. You receive a specification, load port, volume and indicative terms you can check.

Buyer and seller qualification

Company KYC, trade history and payment capacity on both sides before names are shared. Introductions happen principal to principal.

Contract and inspection coordination

Contracts on GAFTA, ANEC, FOSFA or the seller's standard terms, Incoterms 2020, and load-port inspection by SGS, Bureau Veritas or Intertek.

Negotiation support

Native Portuguese with French, English and Spanish: fewer misunderstandings on specification, documents and timing.

20+ yearsLeading a Brazilian import and export company
4 languagesPortuguese, English, French, Spanish
3 sectorsAgriculture, energy, metals and minerals

How we work

Six steps, same order every time.

Every engagement follows the same sequence. Nothing moves to the next step until the previous one is complete.

  1. Inquiry

    Structured form: company, role, product, volume, destination and payment instrument.

  2. Introductory call

    By WhatsApp or Google Meet, to confirm product, volume and timing. We reply within one business day.

  3. Company documents

    The buyer shares a Corporate Information Sheet and KYC documents for review.

  4. Formal offer

    We issue a written offer setting out price, specification, Incoterm, payment terms and procedure.

  5. Acceptance

    If price and procedure are agreed, the buyer signs and returns the offer.

  6. Seller introduction

    We provide the seller's details so the buyer can issue a purchase order directly to the seller.

From there, contract, load-port inspection and payment proceed between buyer and seller, with GDK coordinating until loading.

What you can expect from us

Confidentiality

Your company information is shared only with the counterparty you approve.

One point of contact

The founder handles every file personally, in Portuguese, English, French or Spanish.

Clear terms

Price, specification and procedure are set out in writing before you commit.

Independent inspection

Quality and quantity verified at load port by SGS, Bureau Veritas or Intertek.

Founder

Gislaine De Abreu Macek

Founder & Principal · Brazilian and French national, based in the United States

Gislaine led Henouda Importação e Exportação in Brazil as President from 2002 to 2022, connecting Brazil with partners in Europe, the Middle East and the Americas. She founded GDK in 2023 to apply that cross-border experience to physical commodity trade.

She works directly with every client, in Portuguese, English, French or Spanish.

Full background →

Buying or selling physical commodities?

Tell us the product, volume and destination. If it fits, we will schedule a call within one business day.

Start an inquiry