Lead concentrate Pb ＞30%
Lead concentrate is assessed by its Pb content. Both oxide and sulphide types may be submitted. Describe the processing and physical form, and provide assays traceable to the offered lot.
View Lead concentrate requirements →RTV MINERAL PROCUREMENT · SOUTHEAST ASIA → CHINA
Lead & Zinc Procurement in Southeast Asia
We buy lead concentrate, zinc concentrate and mixed lead-zinc material for supply to the Chinese market.
Mine owners, processing plants, cargo owners and authorised traders in Southeast Asia are welcome to submit offers. Oxide and sulphide materials can be assessed against actual composition, lot records and delivery conditions.
Send existing assays and site photos, even if some records are still missing. Quantity, price, inspection and settlement milestones are discussed for each lot.
These are RTV's commercial screening thresholds. Acceptance also depends on material classification, harmful elements, source and suitability for import into China. Meeting a grade threshold does not constitute import clearance or a purchase agreement.
WHAT WE BUY
Three materials, separate composition checks
Zinc concentrate Zn ＞30%
Zinc concentrate is assessed by its Zn content. Both oxide and sulphide types may be submitted. Describe the processing, moisture and available impurity assays so delivery can be discussed for the actual lot.
View Zinc concentrate requirements →Photos illustrate concentrate appearance only. They do not establish grade, stock availability, origin or the quality of a particular lot.
SEPARATE Pb AND Zn RESULTS · COMBINED ASSESSMENT
Mixed lead-zinc material Pb＋Zn ＞40%
Mixed material is assessed by combined Pb and Zn content. Report Pb and Zn separately, rather than only a total. Include oxide or sulphide type, processing, moisture and cargo location.
REGIONAL COVERAGE & DELIVERY
Southeast Asian supply, receiving in China
These are delivery nodes open for discussion. Agree the specific terminal, border point, transport mode and responsibilities for each lot.
SourceSoutheast AsiaMine owners · Plants · Cargo owners · Authorised traders
Delivery optionsShipment port / Land borderAgree port FOB and land delivery separately
Receiving in ChinaQinzhou · Fangcheng · NanshaOther locations: arrival transactions preferred
FOB at shipment port
Laem Chabang · Hai Phong · Agreed Ho Chi Minh City terminal
Port FOB can be discussed with the named port, loading point, export procedures and shipment arrangements specified. The terminal, transport arrangements and responsibilities must be agreed.
Land-border delivery
Boten, Laos · Agreed Vietnam border point
Confirm the precise delivery point, current cargo location, inland transport and customs responsibilities. Land delivery is agreed separately and is not described as maritime FOB.
Transaction upon arrival in China
Qinzhou · Fangcheng · Nansha
For other cargo locations, transactions upon arrival in China are preferred for discussion. The contract must specify inspection, settlement and title-transfer milestones; arrival alone does not determine them.
- Thailand
- Shipment-port transactions at Laem Chabang can be discussed.
- Vietnam
- Discuss Hai Phong, an agreed Ho Chi Minh City terminal or an agreed land-border point.
- Laos
- Discuss an agreed delivery point at Boten.
- Other Southeast Asian sources
- Assess cargo location and documents, preferably discussing a transaction upon arrival in China.
These locations describe possible delivery routes, not RTV-owned warehouses or permanent offices at every point. Import suitability, export arrangements and documents remain subject to lot-specific checks.
FROM RECORDS TO DELIVERY
Check composition, cargo title and delivery terms
Composition and lot review
Check Pb, Zn, associated elements, moisture and report date, and whether assays, photos and available quantity relate to the same lot.
Source and cargo-title checks
Establish the supplier's role and authority to arrange inspection, sampling, contract signing and delivery.
Sampling and assay coordination
Agree the sampling scope, sample sealing, third-party assays and re-assay arrangements for each lot, using mutually accepted testing evidence.
Coordination for delivery to China
Connect supply with Chinese market demand and confirm the named location, transport and document responsibilities, inspection basis and settlement milestones for each lot.
Submit available cargo information
Send material, location, composition, quantity and contact details. Upload existing reports and photos if available.
Review lot and acceptance conditions
Check supplier role, assay records, material classification and proposed route; identify missing information.
Agree verification and trade milestones
Confirm inspection, sampling, testing, delivery point, cost responsibilities, contract and settlement basis.
Execute the agreed delivery
Proceed with the confirmed lot and conditions, keeping corresponding cargo, assay and handover records.
FIRST CONTACT
Send what you have, then complete verification
Link assays and photos to the offered lot. Label current stock, historical samples and planned production separately.
- Material and type
- Lead concentrate, zinc concentrate or mixed material; oxide, sulphide or unverified.
- Cargo location
- Country, region and whether the cargo is currently at a mine, processing plant, warehouse or another location.
- Composition and moisture
- List Pb and Zn separately, with available impurity and moisture results and assay basis.
- Quantity and supply schedule
- Available quantity and unit; distinguish current stock, planned production and continuing supply.
- Your role and delivery proposal
- Explain your relationship to the cargo owner and proposed shipment port, land-border point or arrival route.
SUPPLIER FAQ
Clarify these points before quoting
How is the 40% threshold calculated for mixed material?
Add the separately reported Pb and Zn contents. The screening threshold is Pb+Zn >40%. Retain the assay basis, moisture and matching lot records.
Can both oxide and sulphide materials be offered?
Both may be submitted for assessment. State the actual mineral type, processing, composition and impurities. The mineral name alone does not determine acceptance.
Does meeting the grade threshold guarantee import or purchase?
No. Acceptance depends on material classification, harmful elements, source, documents and import suitability. Price and trade conditions must be agreed by both parties.
Can I contact RTV before a full assay report is available?
Yes. Send the composition information, quantity, location and photos you have, and state what is missing. Required verification is then completed for the actual lot before procurement.
What are the minimum quantity and payment terms?
State the lot quantity and supply plan first. Quantity, price, inspection, payment and title-transfer milestones are negotiated for the actual lot and contract. No uniform terms are promised on this page.
OFFER MATERIAL TO RTV
Send information about the actual lot
Start with material, location, known composition and quantity. Testing, delivery and trade terms are then discussed for that lot.
Ready-to-copy offer format
Material: Lead concentrate / Zinc concentrate / Mixed lead-zinc material Type: Oxide / Sulphide / Unverified Cargo location (country, region, storage point): Pb (%): Zn (%): Other known elements, moisture and assay basis: Available quantity, unit and future supply plan: My role and relationship to the cargo owner: Proposed delivery point or route: Existing assays, lot identification and site photos: Contact details:
BEFORE YOU OFFER
Mixed concentrate requirements and offer records
ADDITIONAL REFERENCE
Reference standards and buying thresholds differ
The figures below are extracts from existing reference standards. They are not RTV's minimum buying grades on this page and do not replace import assessment for a specific lot.
Numerical specification reference
GB/T 20424—2025 · Composition values: mass %
Content conditions in the standard definition (extract)
Pb ≥ 40
| Parameter | Reference value |
|---|---|
| As | ≤ 0.60 |
| Hg | ≤ 0.05 |
| Cd | ≤ 0.40 |
| Tl | ≤ 0.02 |
For comparing lots and discussing specifications and pricing, not a universal RTV supply threshold.
Content conditions are not the complete definition or RTV purchasing minimums. Check source, beneficiation and physical form for applicability. Do not directly apply this table to ore, slag, dust or recycled material.
Numerical specification reference
GB/T 20424—2025 · Composition values: mass %
Content conditions in the standard definition (extract)
Zn ≥ 40
| Parameter | Reference value |
|---|---|
| As | ≤ 0.50 |
| Cd | ≤ 0.30 |
| Hg | ≤ 0.06 |
| Tl | ≤ 0.02 |
For comparing lots and discussing specifications and pricing, not a universal RTV supply threshold.
Content conditions are not the complete definition or RTV purchasing minimums. Check source, beneficiation and physical form for applicability. Do not directly apply this table to ore, slag, dust or recycled material.
Mixed lead-zinc concentrate · additional reference
GB/T 20424—2025 · Composition values: mass %
Content conditions in the standard definition (extract)
Pb ≥ 15; Zn ≥ 28; Pb+Zn ≥ 45
| Parameter | Reference value |
|---|---|
| As | ≤ 0.45 |
| Cd | ≤ 0.40 |
| Hg | ≤ 0.05 |
| Tl | ≤ 0.02 |
For comparing lots and discussing specifications and pricing, not a universal RTV supply threshold.
Content conditions are not the complete definition or RTV purchasing minimums. Check source, beneficiation and physical form for applicability. Do not directly apply this table to ore, slag, dust or recycled material.
OTHER LEAD & ZINC PRODUCTS
Lead and zinc ingot information
Existing product information and links remain available. Ingot specifications apply separately from the mineral procurement requirements above.
Lead ingot
Numerical specification reference
GB/T 469—2023 · Composition values: mass %
| Parameter | Pb99.996 | Pb99.994 |
|---|---|---|
| Pb | ≥ 99.996 | ≥ 99.994 |
| Ag | ≤ 0.0006 | ≤ 0.0007 |
| Cu | ≤ 0.0007 | ≤ 0.0008 |
| Bi | ≤ 0.0015 | ≤ 0.0025 |
| As | ≤ 0.0005 | ≤ 0.0005 |
| Sb | ≤ 0.0007 | ≤ 0.0008 |
| Sn | ≤ 0.0005 | ≤ 0.0005 |
| Zn | ≤ 0.0004 | ≤ 0.0004 |
| Fe | ≤ 0.0005 | ≤ 0.0005 |
| Cd | ≤ 0.0002 | ≤ 0.0002 |
| Ni | ≤ 0.0002 | ≤ 0.0002 |
| Total impurities | ≤ 0.004 | ≤ 0.006 |
For comparing lots and discussing specifications and pricing, not a universal RTV supply threshold.
These reference grades concern electrolytically refined lead. Check recycled lead separately; a reference grade is not proof of stock or lot conformity.
Size, weight and lot reference
Listed small ingots: 48±3 kg, 42±2 kg or 24±1 kg; large ingots: 950±50 kg or 500±25 kg. Discuss actual ingot/bundle weight and packing per lot; these are not stock commitments.
- Product form
- Identify primary/recycled source and refining route. Pb99.996 and Pb99.994 are grade references, not stock commitments.
- Assay and lot information
- Pb, Ag, Cu, Bi, As, Sb, Sn, Zn, Fe, Cd, Ni
- Pricing discussion
- Actual chemistry, source, ingot weight, packing, quantity and delivery location inform premiums/discounts and delivery.
Zinc ingot
Numerical specification reference
GB/T 470—2008 · Composition values: mass %
| Parameter | Zn99.995 |
|---|---|
| Zn | ≥ 99.995 |
For comparing lots and discussing specifications and pricing, not a universal RTV supply threshold.
The supplied source specifies Zn≥99.995% but no verified Pb, Cd, Fe, Cu or Sn limits; no values are invented. Share actual assays for discussion. GB/T 470—2026 takes effect on 2026-12-01.
- Product form
- Use grades such as Zn99.995 as discussion references; describe actual chemistry, ingot weight and packing per lot.
- Assay and lot information
- Zn, Pb, Cd, Fe, Cu, Sn
- Pricing discussion
- Discuss pricing using reference grade, lot assay, source, quantity, packing and delivery location.