Import Fire Assay Flux — Buy in wholesale FOB from Supplier in China
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Fire Assay Flux
The product offered by Gemhold (sjz) Trading Co. Ltd. is a fire assay flux composed of a multi‑component mineral blend that includes lead oxide (litharge), soda ash, borax and silica. The company can formulate the flux to a customer’s recipe or use its own standard specification, and both gold‑free and silver‑free variants are produced. Litharge used in the mix meets a purity range of 99.5 % to 99.9 % as confirmed by the supplier’s quality control system.
In the fire‑assay industry the flux acts as a lead glass to fuse ore samples in a crucible, allowing precious metals to be separated. Typical assay‑grade fluxes contain less than 1.5 ppb gold and less than 0.15 ppm silver, limits that Gemhold can achieve through semi‑automatic manufacturing. The powder is usually supplied in standard bags of 25 kg, but custom packaging sizes are also available for laboratory or industrial customers.
The flux is used by mineral processing labs, precious‑metal refineries and geological assay services that require reliable determination of gold, silver or platinum‑group metals. Buyers generally request a certificate of analysis for each batch and may ask for the material to be shipped in sealed containers under FOB or CIF terms. Specific minimum order quantities, lead times and payment conditions should be confirmed directly with the supplier before placing an order.
| Material composition | Multi‑component mineral blend (lead oxide, soda ash, borax, silica) |
| Litharge purity | 99.5 % - 99.9 % (real) |
| Gold content limit | < 1.5 ppb (typical for assay‑grade) |
| Silver content limit | < 0.15 ppm (typical for assay‑grade) |
| Form | Fine powder |
| Standard packaging | 25 kg bag (typical) |
| Custom packaging | Available on request (typical) |
| Particle size range | 100 µm - 200 µm (typical) |
| Moisture content | < 0.5 % (typical) |
| Bulk density | ≈ 3.1 g cm⁻³ (typical) |
Gemhold (sjz) Trading Co. Ltd. is based in Shijiazhuang, Hebei Province, China, at Room 711 Zhongyuan Building, Youyi Street (postal code 050000). The company holds a harbour‑level trust tier on the platform and lists a response rate of 0 %, indicating that enquiries may require follow‑up for timely replies.
The supplier specialises in the production of high‑purity litharge and related fire‑assay consumables. It operates a semi‑automatic line that enables batch‑by‑batch assay and the provision of a certificate of analysis before dispatch. No additional corporate history, employee numbers or revenue figures are disclosed in the listing.
Fire assay flux is a specialized mineral powder preparation essential for fire assaying in mining, metallurgy and precious metal refineries. Used to determine gold, silver and PGM content in ores and concentrates, this flux is formulated as per customer recipe or standard specifications. Gold-free and silver-free types available for specific assay requirements. Critical consumable for import-export trade in assay and refining operations. Packaged in standard or custom configurations for laboratory and industrial use.
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Sourcing Fire Assay Flux from Gemhold (sjz) Trading Co. Ltd. - China Import Guide
Before placing an order, confirm the exact litharge purity, gold and silver limits, and request a current certificate of analysis. Verify that the packaging format matches your handling facilities and that the supplier can meet any special transport regulations for mineral powders.
Discuss logistics early: ask the supplier to confirm lead time, preferred Incoterms (FOB or CIF) and the payment method they accept. Because the listed response rate is 0 %, allow extra time for communication and request written confirmation of the shipping schedule.
Arrange for an independent inspection if large volumes are ordered. Request the COA, moisture test results and any relevant safety data sheets. Ensure that the batch number and lot traceability are recorded for quality control purposes.
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30 suppliersBuy Fire Assay Flux in Bulk — Verified Supplier in China
When sourcing Fire Assay Flux for your business, securing the right balance of quality and cost is essential. Gemhold (sjz) Trading Co. Ltd., a verified supplier based in China, offers this product with key specifications including Gold-Free and Silver-Free grades available per customer recipe or standard specification, Custom formulation; typically contains borax, soda ash, silica sand, fluorspar, and litharge in balanced proportions, and Fine powder, typically -100 to +200 mesh; particle size optimized for homogeneous melting in crucible assay. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $24/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 3824.99, making it a staple in the Mineral Powder sector with strong demand from importing countries worldwide.
Fire Assay Flux Specifications, Trade Terms & Pricing
Importing Fire Assay Flux requires careful attention to shipping logistics, customs compliance, and secure payment terms. Gemhold (sjz) Trading Co. Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 3824.99 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading import export marketplace designed to make cross-border trade secure and efficient.
About Gemhold (sjz) Trading Co. Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Fire Assay Flux has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Mineral Powder category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Fire Assay Flux — Shipping, Logistics & Customs
Importing Fire Assay Flux requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 3824.99 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Fire Assay Flux
What is the wholesale price of Fire Assay Flux?
The current listed wholesale price for Fire Assay Flux from Gemhold (sjz) Trading Co. Ltd. is $24/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Gemhold (sjz) Trading Co. Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Fire Assay Flux?
The supplier, Gemhold (sjz) Trading Co. Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Fire Assay Flux. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Fire Assay Flux?
For international shipping and customs clearance, Fire Assay Flux is classified under HS Code 3824.99. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Fire Assay Flux from China?
To import Fire Assay Flux from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Gemhold (sjz) Trading Co. Ltd.. Ensure you have the necessary import licenses for Mineral Powder products in your destination country.
Is Gemhold (sjz) Trading Co. Ltd. a verified supplier?
Yes, Gemhold (sjz) Trading Co. Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Fire Assay Flux?
The key specifications for Fire Assay Flux supplied by Gemhold (sjz) Trading Co. Ltd. include Gold-Free and Silver-Free grades available per customer recipe or standard specification, Custom formulation; typically contains borax, soda ash, silica sand, fluorspar, and litharge in balanced proportions, and Fine powder, typically -100 to +200 mesh; particle size optimized for homogeneous melting in crucible assay. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Fire Assay Flux?
Gemhold (sjz) Trading Co. Ltd. offers Fire Assay Flux with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Fire Assay Flux the most?
Fire Assay Flux is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Gemhold (sjz) Trading Co. Ltd. through our platform.
What certifications does this Fire Assay Flux supplier hold?
Gemhold (sjz) Trading Co. Ltd. maintains international quality certifications. These ensure that the Fire Assay Flux meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Fire Assay Flux on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Gemhold (sjz) Trading Co. Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Gemhold (sjz) Trading Co. Ltd..
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