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Silica Fume /Micro Silica /Microsilica
Shandong Longtaili Science And Technology Co.,ltd. offers an amorphous silicon dioxide micro powder commonly referred to as silica fume, microsilica or micro silica. The product is described as a high‑performance additive that improves compressive strength, durability and chemical resistance of concrete, and is also used in refractory castables and high‑strength ceramics. It is a dry powder co‑product of silicon or ferrosilicon production, with typical purity levels ranging from 85 % to 99 % SiO₂, and is exported from China in standard bulk packaging.
The particles are spherical, non‑porous and have an average diameter of about 0.15 µm (150 nm), giving a specific surface area of roughly 18‑22 m²/g. Such fine, uniform particles enhance particle packing and create a pronounced pozzolanic effect when they react with calcium hydroxide in cementitious systems. Typical bulk density is between 0.45 and 0.65 g/cm³ and moisture content is kept below 0.5 % to maintain reactivity, which aligns with industry norms for microsilica used in high‑temperature applications.
Importers usually purchase the material for concrete producers, precast manufacturers and refractory product makers who need improved strength and heat resistance. The common packaging formats are 25 kg bags and larger jumbo bags of 500 kg or 1 ton, allowing flexible handling and container loading. As the listing does not disclose MOQ, price or lead‑time, buyers should request a formal quotation and any relevant test certificates before finalising the transaction.
| Material | Amorphous Silicon Dioxide (SiO2) Micro Powder |
| Purity range (typical) | 85‑99 % SiO₂ |
| Average particle diameter (typical) | 0.15 µm (150 nm) |
| Specific surface area (typical) | 18‑22 m²/g |
| Bulk density (typical) | 0.45‑0.65 g/cm³ |
| Moisture content (typical) | <0.5 % |
| Standard packaging | 25 kg bags, 500 kg or 1 t jumbo bags (typical) |
| Compliance standards (typical) | ASTM C1240, EN 197‑1 |
| Recommended concrete replacement level (typical) | 5‑12 % of cement weight |
| Typical storage condition | Dry, ≤30 °C, humidity <60 % (typical) |
Shandong Longtaili Science And Technology Co.,ltd. is situated at No.34 Guantao Road, Shibei District, Qingdao City, Shandong Province, China. The supplier carries a harbor verification tier, indicating that basic corporate information has been validated on the platform. Although the response rate is listed as 0 %, the detailed address confirms an established manufacturing base in the Qingdao industrial zone.
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 Shandong Longtaili Science And Technology Co.,ltd. - China Import Guide
Before committing to purchase, confirm Shandong Longtaili’s business registration and request a recent laboratory analysis that details silica purity, particle size distribution and moisture content. Ask for certificates of conformity to ASTM C1240 or EN 197‑1 and consider obtaining a trial sample for your own testing regime.
Clarify the incoterm - for instance FOB Qingdao or CIF - and verify the exact packaging size, whether 25 kg bags or jumbo bags, to align with your logistics plan. Since the listing does not provide lead‑time or payment terms, negotiate these points directly with the supplier and obtain a written schedule.
Arrange a third‑party inspection at the loading port to verify bulk density, moisture level and particle size compliance. Ensure that the supplier provides a full test report and any required export documentation, such as a material safety data sheet, to support quality assurance during the import process.
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30 suppliersBuy Silica Fume /Micro Silica in Bulk — 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 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. Ask the supplier of this Silica Fume /Micro Silica 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 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.
How can I check Shandong Longtaili Science And Technology Co.,ltd. before ordering?
Open the Shandong Longtaili Science And Technology 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 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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