Import Micro Silica — Buy in wholesale FOB from Supplier in China
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Micro Silica
Micro Silica from Gansu Sanyuan Silicon Materials Co., Ltd. is a highly reactive pozzolanic material derived as a byproduct of ferrosilicon and silicon metal production. The product contains silica (SiO2) exceeding 85%, making it a powerful additive for enhancing the mechanical and chemical properties of concrete, mortars, and refractory formulations. Supplied from Lanzhou, Gansu, this material is offered in both densified and undensified forms to accommodate different processing needs in construction and industrial applications.
The amorphous silicon dioxide in this grade exhibits an ultra-fine particle size, typically below 1 micron, which accelerates pozzolanic reactions with calcium hydroxide in cement to form calcium silicate hydrate (CSH). This reaction improves compressive strength, reduces permeability, and enhances resistance to chloride ingress and sulfate attack in concrete structures. Standard industry practice classifies silica fume by its SiO2 content, with grades above 85% considered premium for high-performance applications such as shotcrete, oil well cementing, and advanced ceramics.
Primary buyers include contractors for high-rise buildings, infrastructure projects, and precast concrete manufacturers seeking durability in harsh environments. The material is commonly shipped in bulk bags or drums, with logistics tailored to export markets. Importers should confirm packaging specifications and handling requirements, as silica fume’s fine particle size demands careful storage to prevent dust generation and moisture absorption.
| Chemical Composition | Silicon Dioxide (SiO2) > 85% |
| Particle Size | Typical < 1 micron |
| Form | Densified and undensified |
| Reactivity | Highly pozzolanic |
| Primary Use | Concrete, mortars, refractory, shotcrete, oil well cementing |
| Standard Purity Range | Typical 85-98% SiO2 for premium grades |
| Bulk Density (Densified) | Typical 500-700 kg/m³ |
| Bulk Density (Undensified) | Typical 200-300 kg/m³ |
| Moisture Content | Standard < 1.5% |
| Color | Grey to off-white |
Gansu Sanyuan Silicon Materials Co., Ltd. operates from No. 215, Jinchang South Road in Chengguan District, Lanzhou, Gansu Province, China. The company specializes in the production and export of silica-based materials, with a focus on micro silica derived from ferrosilicon and silicon metal manufacturing processes. Its location in Gansu, a region with significant metallurgical activity, positions it well for raw material sourcing and logistics.
The supplier’s profile indicates a harbor trust tier, though its response rate and average response time are currently not available. The company’s product portfolio centers on materials for high-performance construction and industrial applications, with micro silica as a flagship offering. Buyers should directly confirm operational details, such as production capacity and quality control measures, as these are not explicitly stated in the listing.
Micro Silica, also known as Silica Fume, is a highly reactive pozzolanic material derived as a byproduct of ferrosilicon and silicon metal production. With silica content typically exceeding 85%, it significantly enhances the strength, durability, and chemical resistance of concrete, mortars, and refractory formulations. Widely traded internationally for use in high-performance construction, shotcrete, oil well cementing, and advanced ceramics applications, Micro Silica commands steady demand in global building material markets. Offered in both densified and undensified forms to suit various processing requirements.
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Sourcing Micro Silica from Gansu Sanyuan Silicon Materials Co., Ltd. - China Import Guide
Before placing an order with Gansu Sanyuan Silicon Materials Co., Ltd., verify the exact SiO2 content, particle size distribution, and moisture levels for the specific batch. Request a certificate of analysis and confirm whether the material meets ASTM C1240 or EN 13263 standards for silica fume, as these are critical for high-performance concrete applications.
Discuss logistics early to align on Incoterms, as micro silica’s fine particle size requires careful handling to prevent dust generation during loading and unloading. Lead times may vary depending on production schedules and export documentation, so confirm these with the supplier. Payment terms should also be clarified, as bulk shipments of silica fume often involve letters of credit or advance payments.
Conduct quality checks upon receipt, including testing for SiO2 purity, particle size, and moisture content. Inspect packaging for integrity, as damaged bags can lead to contamination or loss of material. Request a material safety data sheet (MSDS) to ensure compliance with local regulations for handling and storage of silica-based products.
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Browse Micro Silica — Top Products
22 listingsTop Verified Suppliers for Micro Silica
30 suppliersBuy Micro Silica in Bulk — Verified Supplier in China
When sourcing Micro Silica for your business, securing the right balance of quality and cost is essential. Gansu Sanyuan Silicon Materials Co., Ltd., a verified supplier based in China, offers this product with key specifications including Silica Fume / Micro Silica (Densified or Undensified), SiO2: 85% - 98%, Loss on Ignition (LOI): 1% - 6%, and Particle size: 0.1 - 1.0 microns; BET surface area: 15 - 25 m²/g. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $110200/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 Silica Sand sector with strong demand from importing countries worldwide.
Micro Silica Specifications, Trade Terms & Pricing
Importing Micro Silica 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 online 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. The supplier of this Micro Silica 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 Silica Sand category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Micro Silica — Shipping, Logistics & Customs
Importing Micro Silica 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 Micro Silica
What is the wholesale price of Micro Silica?
The current listed wholesale price for Micro Silica from Gansu Sanyuan Silicon Materials Co., Ltd. is $110200/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 Micro Silica?
The supplier, Gansu Sanyuan Silicon Materials Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Micro Silica. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Micro Silica?
For international shipping and customs clearance, Micro Silica 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 Micro Silica from China?
To import Micro Silica 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 Silica Sand products in your destination country.
Is Gansu Sanyuan Silicon Materials Co., Ltd. a verified supplier?
Yes, Gansu Sanyuan Silicon Materials 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 Micro Silica?
The key specifications for Micro Silica supplied by Gansu Sanyuan Silicon Materials Co., Ltd. include Silica Fume / Micro Silica (Densified or Undensified), SiO2: 85% - 98%, Loss on Ignition (LOI): 1% - 6%, and Particle size: 0.1 - 1.0 microns; BET surface area: 15 - 25 m²/g. 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 Micro Silica?
Gansu Sanyuan Silicon Materials Co., Ltd. offers Micro Silica with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Micro Silica the most?
Micro Silica 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 Micro Silica supplier hold?
Gansu Sanyuan Silicon Materials Co., Ltd. maintains international quality certifications. These ensure that the Micro Silica meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Micro Silica 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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