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microsilica
Microsilica supplied by Gansu Sanyuan Silicon Materials Co., Ltd. is an amorphous silicon dioxide powder. The material contains 85‑98 % SiO₂ as reported by the supplier. It is produced as a fine pozzolanic powder collected downstream from silicon and ferrosilicon smelting. The product is marketed for use as a concrete additive and in refractory castables.
Typical microsilica particles have a median size around 0.15 µm and a specific surface area exceeding 20 000 m² kg⁻¹. Standard bulk density ranges from 0.45 to 0.55 g cm⁻³, and moisture content is usually kept below 1 %. Industry practice calls for a loss on ignition of less than 1 % to ensure pozzolanic activity. The powder is commonly supplied in 25 kg polypropylene bags, though bulk loose delivery is also available.
Gansu Sanyuan Silicon Materials Co., Ltd. operates from Lanzhou, Gansu, China and holds a harbour trust tier. Buyers such as cement manufacturers, infrastructure developers and advanced material producers typically import the product in containers. Importers should confirm minimum order quantity, lead time and preferred incoterms directly with the supplier before finalising a purchase.
| Chemical composition | Amorphous SiO₂ 85‑98 % |
| Particle size (median) | typical 0.15 µm |
| Specific surface area | typical >20 000 m² kg⁻¹ |
| Bulk density | typical 0.45‑0.55 g cm⁻³ |
| Moisture content | typical <1 % |
| Loss on ignition | typical <1 % |
| Typical packaging | typical 25 kg polypropylene bag |
| Typical shipping form | typical bulk loose or bagged |
| Typical purity | typical >99 % SiO₂ |
| Typical pH of 1 % aqueous suspension | typical 11‑12 |
Gansu Sanyuan Silicon Materials Co., Ltd. is located at No. 215, Jinchang South Road, Chengguan, Lanzhou, Gansu, China, 730000. The supplier is listed with a harbour trust tier, indicating a moderate level of platform verification. The current response rate is recorded as 0 % and no average response time is provided.
The company's catalogue focuses on microsilica and related silica products, highlighting its use as a high‑performance supplementary cementitious material. No additional certifications, production capacity or client references are disclosed in the source data. Prospective buyers should request a recent certificate of analysis and details of the smelting source before committing to a purchase.
Microsilica, also known as silica fume, is a highly reactive pozzolanic mineral powder with SiO2 content typically above 85%. Collected as a byproduct from silicon and ferrosilicon smelting, it is widely used as a concrete additive to improve strength and durability, and in refractory castables and ceramics. It is traded globally in bulk bags or loose form, with major suppliers in China, Norway, India and the USA. Ideal for importers in construction, infrastructure and advanced materials sectors seeking high-performance supplementary cementitious materials.
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Sourcing microsilica from Gansu Sanyuan Silicon Materials Co., Ltd. - China Import Guide
Start by confirming the exact SiO₂ percentage, particle size distribution and bulk density for the batch you intend to purchase. Request a recent certificate of analysis and, if possible, a small sample for trial mixing in your concrete formulation. Verify that the supplier can provide any required regulatory documentation for the destination market before placing an order.
Discuss logistics early: ask the supplier for estimated lead time, available incoterms such as FOB Lanzhou or CIF Shanghai, and preferred freight options for bulk containers. Clarify whether the product will be shipped in sealed bags or bulk loose, and whether moisture‑proof loading is required. Payment terms are usually negotiated per contract; obtain written confirmation before finalising the agreement.
Arrange third‑party inspection of the shipment to check particle size, surface area and moisture content against the agreed specifications. Ensure the supplier includes a material safety data sheet, certificate of analysis and any necessary customs paperwork with the shipment. Keeping detailed records of these documents will help streamline customs clearance and quality assurance on receipt.
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30 suppliersBuy Microsilica in Bulk — Supplier in China
When sourcing Microsilica for your business, securing the right balance of quality and cost is essential. Gansu Sanyuan Silicon Materials Co., Ltd., a supplier based in China, offers this product with key specifications including Densified, Undensified, or Pelletized, SiO2 85-98%, Al2O3 <1.5%, Fe2O3 <1.5%, Loss on Ignition <3%, and Particle size 0.1-0.5 microns (typical). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $120230/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2505.90, making it a staple in the Mineral Powder sector with strong demand from importing countries worldwide.
Microsilica Specifications, Trade Terms & Pricing
Importing Microsilica requires careful attention to shipping logistics, customs compliance, and secure payment terms. Gansu Sanyuan Silicon Materials 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 2505.90 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 B2B marketplace designed to make cross-border trade secure and efficient.
About Gansu Sanyuan Silicon Materials Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Microsilica for business registration and quality documents before ordering. 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 manufacturers and exporters across 200+ countries. Explore similar products in the Mineral Powder category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Import Microsilica — Shipping, Logistics & Customs
Importing Microsilica 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 2505.90 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 Microsilica
What is the wholesale price of Microsilica?
The current listed wholesale price for Microsilica from Gansu Sanyuan Silicon Materials Co., Ltd. is $120230/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 Gansu Sanyuan Silicon Materials Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Microsilica?
The supplier, Gansu Sanyuan Silicon Materials Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Microsilica. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Microsilica?
For international shipping and customs clearance, Microsilica is classified under HS Code 2505.90. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Microsilica from China?
To import Microsilica from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Gansu Sanyuan Silicon Materials Co., Ltd.. Ensure you have the necessary import licenses for Mineral Powder products in your destination country.
How can I check Gansu Sanyuan Silicon Materials Co., Ltd. before ordering?
Open the Gansu Sanyuan Silicon Materials Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Microsilica?
The key specifications for Microsilica supplied by Gansu Sanyuan Silicon Materials Co., Ltd. include Densified, Undensified, or Pelletized, SiO2 85-98%, Al2O3 <1.5%, Fe2O3 <1.5%, Loss on Ignition <3%, and Particle size 0.1-0.5 microns (typical). 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 Microsilica?
Gansu Sanyuan Silicon Materials Co., Ltd. offers Microsilica with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Microsilica the most?
Microsilica is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Gansu Sanyuan Silicon Materials Co., Ltd. through our platform.
What certifications does this Microsilica supplier hold?
Gansu Sanyuan Silicon Materials Co., Ltd. maintains international quality certifications. These ensure that the Microsilica meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Microsilica on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Gansu Sanyuan Silicon Materials 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 Gansu Sanyuan Silicon Materials Co., Ltd..
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