SUPPLIER GUIDE · SOUTHEAST ASIAN LEAD-ZINC CONCENTRATES

Lead-Zinc Offers: Link the Assay to the Lot

Identify the material, its location and the composition and quantity information you already have. Then connect the assay and photos to the actual lot.

You do not need a complete document pack for the first enquiry. Share the information available and mark unknown items. The necessary lot-specific checks must be completed before an actual purchase.

IDENTIFY THE CARGO FIRST

Four essentials for your first contact

Material
Lead concentrate, zinc concentrate or mixed lead-zinc concentrate; oxide or sulphide type and known processing details.
Location
Country, region and storage point. State whether the cargo is at a mine, processing plant, warehouse or another location.
Available composition data
Report Pb and Zn separately and retain the assay basis. Mark unavailable results as pending.
Quantity and contact
Current quantity and units, future supply plan, your role and a working contact method.

Commercial screening: lead concentrate Pb >30%; zinc concentrate Zn >30%; mixed lead-zinc concentrate Pb + Zn >40%. Material type, impurities, origin, documents and import eligibility remain subject to review before acceptance.

CONNECT THE RECORDS TO THE CARGO

Supporting information for lot verification

Assay and sample identity

State the report date, issuer, sample number and sampling date, plus the stockpile, packages or lot covered. Retain the report’s dry or wet basis and moisture information.

If you only have a screenshot, explain what is available. Relevant complete records can be provided privately through the supplier form later.

Photos linked to the cargo

Where possible, include identifiable stockpile, package or lot markings, the photo date and storage location. Distinguish current site photos from historical images and material appearance references.

Photos help check physical condition. They do not replace an assay or independently prove ownership.

Stock versus planned production

List currently available quantities, units and expected future output separately. Distinguish wet tonnes, dry tonnes, weighbridge figures and estimates. Planned output must not be described as stock already in storage.

If exact figures are unavailable, label the estimate and its basis, then confirm per lot.

Ownership and authority to deliver

State whether you are the mine owner, processor, cargo owner, authorised trader or intermediary, and what you can arrange: inspection, sampling, contracting and delivery.

Being able to take a visitor to a warehouse does not establish authority to sell the lot. The relevant authority still needs verification.

MAKE INFORMATION GAPS SPECIFIC

These statements need one more step

Illustrative communication scenarios only; they do not describe a particular supplier or an actual completed transaction.

Information providedWhat remains unclearWhat to add
Only an assay screenshotThe sample and report context cannot be identifiedProvide the report date, issuer, sample ID and corresponding cargo. Submit known information and flag gaps.
A report on last month’s sampleIt may not represent the stock available nowMark it as historical. Explain whether stock is the same lot or has been replenished or mixed. Retesting is agreed separately.
‘42% combined lead and zinc’Individual Pb, Zn and the assay basis are unclearProvide separate Pb and Zn values on the same lot basis. Do not merge results from different reports or stockpiles.
‘We can produce 500 tonnes per month’Current stock and future production are being combinedSeparate available stock, planned production and units. Forecast output is not verified inventory.
‘I can take you to see the warehouse stock’Authority to sell, sample or deliver is unspecifiedExplain the owner relationship and authorisation: who contracts, arranges testing and can release the cargo.
‘The cargo is in Hai Phong, ready for export’Storage location does not establish export readinessIdentify origin, current location, exporter and available documents separately. Check the proposed route per lot.

AFTER SUBMISSION

Check the records, then agree verification and trade terms

  1. Submit what you know

    Material, location, composition, quantity, your role and contact details. Include existing reports and photos if available.

  2. Match the records to the lot

    Establish whether the assay, photos, quantity and owner relationship concern the same cargo, and list points still to verify.

  3. Agree verification and transaction terms

    Discuss inspection, sampling, third-party testing, delivery point, cost responsibilities, contract and settlement basis.

Inspection, sampling, third-party testing, delivery and settlement follow the parties’ agreement. Submitting information does not confirm a purchase.

A FORMAT YOU CAN USE

Copy the checklist and explain the available information

The public checklist lists submission fields only. It does not display third-party assay report samples, layouts or factory records. Upload attachments through the supplier form; its stated limits apply.

Lead-zinc supplier checklist

RTV LEAD-ZINC SUPPLIER CHECKLIST

Material: lead concentrate / zinc concentrate / mixed lead-zinc concentrate
Type and processing: oxide / sulphide / to be verified
Cargo location (country, region, storage point):
Pb (%):
Zn (%):
Assay basis, moisture and other known elements:
Report date, sample ID and corresponding lot:
Current stock quantity and units (wet tonnes / dry tonnes / estimate):
Future supply plan (separate from stock):
My role, relationship to the owner and checks I can arrange:
Proposed delivery point or route:
Available reports, lot markings and site photos:
Missing information and what can be supplied later:
Contact details:

State unknown items clearly. Do not combine results from different lots or assay bases.
This is a supplier information checklist, not an assay report, proof of title or purchase confirmation.

SUPPLIER QUESTIONS

Before you submit an offer

Can I contact RTV without a complete assay report?

Yes. Share available composition data, quantity, location and photos, and explain what is missing. Leave unknown results blank. The necessary checks must be completed before an actual purchase.

Can an old report from the same mine represent this cargo?

Clearly label it as a historical report. The same mine does not establish the same lot, stockpile or composition. Any new sampling and testing requirements depend on the actual cargo and agreement between the parties.

Will my supplier documents appear on the website?

This page publishes submission fields and checking methods, without displaying supplier assay report samples, layouts or factory records. Use the supplier form to submit attachments for the specific business discussion.

What remains to be assessed after the grade threshold is met?

Material type, impurities, origin, documents and import eligibility still require review. Price and delivery terms must also be agreed. Meeting a commercial grade threshold does not conclude a purchase.