Import Silica Fume /Micro Silica /Microsilica — Buy in wholesale FOB from Supplier in China
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Silica Fume /Micro Silica /Microsilica
Silica fume, also known as condensed silica fume or microsilica, is a spherical sub-micron amorphous silicon dioxide used in many applications. Silica fume is a co-product of silicon or ferrosilicon production, consisting of ultrafine (sub-micron), amorphous, non-porous, perfectly spherical silicon dioxide (SiO2) particles, with purity levels of 85 to 99 %. The main effect of these ultra-fine particles is to greatly improve particle packing and produce a highly pozzolanic reaction in concrete and other cementitious bond systems where the silicon dioxide reacts with calcium hydroxide, heightening performance levels and the strength and durability of these materials. Additionally, silica fume, because of its amorphous (non-crystalline) structure and its specific area, provides other useful features to various applications, including improved sintering capabilities and enhanced high temperature performance of refractory castables, resulting in reactions between microsilica and other components of the refractory mix. To summarize, silica fume has two key features which alone or in combination are the basis for its high performance: The nano-sized spherical non-porous particles create an efficient "filler effect" Primary particles have an average diameter of about 0.15 �¼m (150 nanometers) Microsilica is a highly reactive form of silica producing a "chemical effect" Thanks to its amorphous nature and high specific surface area.
| HS Code | 6909.19 |
| Material | Amorphous Silicon Dioxide (SiO2) Micro Powder |
| Grade/Type | Densified, Undensified, or Pelletized |
| Purity/Composition | SiO2 85% - 99% (varies by grade) |
| Size/Particle Size | 0.1 - 1.0 micron (sub-micron spherical particles) |
| Loss on Ignition (LOI) | Up to 6% maximum |
| Standard | ASTM C1240, EN 13263, GB/T 18736 |
| Application | High-performance concrete, refractories, ceramic, insulation materials, epoxy coatings |
| Packaging | 25kg bags, 500kg/1000kg big bags, or bulk tanker |
| Origin | China, India, USA, Norway, Brazil (common trade origins) |
Silica fume is a high-performance amorphous silicon dioxide micro powder widely used as a concrete additive and cement filler to enhance compressive strength, durability, and chemical resistance. Classified as a supplementary cementitious material, it is also applied in refractory castables, high-strength ceramics, and specialty coatings. As a globally traded commodity in dry powder form, microsilica is sourced from ferrosilicon and silicon metal production, with major supply from China, Norway, and the United States. Standard packaging is 25kg bags or 500kg/1000kg jumbo bags, shipped in containers for international export.
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Sourcing Silica Fume /Micro Silica /Microsilica from China
Silica Fume /Micro Silica /Microsilica is offered by Shandong Longtaili Science And Technology Co.,ltd., a Supplier based in China, in wholesale quantities for importers, distributors, and trade buyers. Contact the supplier to request pricing, minimum order quantity, and shipping terms for your destination.
When importing Silica Fume /Micro Silica, confirm trade terms such as FOB or CIF, packaging, and any certification or documentation you need directly with the supplier before placing a bulk order.
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30 suppliersBuy Silica Fume /Micro Silica in Bulk — Verified Supplier in China
When sourcing Silica Fume /Micro Silica /Microsilica for your business, securing the right balance of quality and cost is essential. Shandong Longtaili Science And Technology Co.,ltd., a verified supplier based in China, offers this product with key specifications including Densified, Undensified, or Pelletized, SiO2 85% - 99% (varies by grade), and 0.1 - 1.0 micron (sub-micron spherical particles). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $999/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 6909.19, making it a staple in the Silica Sand sector with strong demand from importing countries worldwide.
Silica Fume /Micro Silica Specifications, Trade Terms & Pricing
Importing Silica Fume /Micro Silica requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shandong Longtaili Science And Technology 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 6909.19 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 global B2B marketplace designed to make cross-border trade secure and efficient.
About Shandong Longtaili Science And Technology Co.,ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Silica Fume /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 import export marketplace. Start your sourcing journey today.
Import Silica Fume /Micro Silica — Shipping, Logistics & Customs
Importing Silica Fume /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 6909.19 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 Silica Fume /Micro Silica
What is the wholesale price of Silica Fume /Micro Silica /Microsilica?
The current listed wholesale price for Silica Fume /Micro Silica /Microsilica from Shandong Longtaili Science And Technology Co.,ltd. is $999/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 Shandong Longtaili Science And Technology Co.,ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Silica Fume /Micro Silica?
The supplier, Shandong Longtaili Science And Technology Co.,ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Silica Fume /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 Silica Fume /Micro Silica /Microsilica?
For international shipping and customs clearance, Silica Fume /Micro Silica /Microsilica is classified under HS Code 6909.19. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Silica Fume /Micro Silica from China?
To import Silica Fume /Micro Silica from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Shandong Longtaili Science And Technology Co.,ltd.. Ensure you have the necessary import licenses for Silica Sand products in your destination country.
Is Shandong Longtaili Science And Technology Co.,ltd. a verified supplier?
Yes, Shandong Longtaili Science And Technology 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 Silica Fume /Micro Silica /Microsilica?
The key specifications for Silica Fume /Micro Silica /Microsilica supplied by Shandong Longtaili Science And Technology Co.,ltd. include Densified, Undensified, or Pelletized, SiO2 85% - 99% (varies by grade), and 0.1 - 1.0 micron (sub-micron spherical particles). 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 Silica Fume /Micro Silica?
Shandong Longtaili Science And Technology Co.,ltd. offers Silica Fume /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 Silica Fume /Micro Silica the most?
Silica Fume /Micro Silica is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shandong Longtaili Science And Technology Co.,ltd. through our platform.
What certifications does this Silica Fume /Micro Silica supplier hold?
Shandong Longtaili Science And Technology Co.,ltd. maintains international quality certifications. These ensure that the Silica Fume /Micro Silica meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Silica Fume /Micro Silica /Microsilica on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Shandong Longtaili Science And Technology 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 Shandong Longtaili Science And Technology Co.,ltd..
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