Import Micro Silica — Buy in wholesale FOB from Supplier in China
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Micro silica
Micro silica, also known as silica fume, is an ultra-fine pozzolanic additive with a minimum silicon dioxide (SiO2) content of 85%. The material supplied by Guizhou Jingyang Trading Co., Ltd consists of amorphous silica particles measuring 0.1 to 0.15 µm, making it highly reactive in cementitious systems. This grade is produced as a byproduct of ferrosilicon and silicon metal smelting, captured and processed for industrial use.
The product enhances concrete performance by filling micro-voids and reacting with calcium hydroxide to form additional calcium silicate hydrate (CSH), which boosts compressive strength and durability. Typical bulk density ranges from 200 to 700 kg/m³ in its undensified form, while densified grades can reach 500 to 700 kg/m³. It is compatible with all Portland cement types and commonly used in high-performance concrete, precast elements, and shotcrete applications where resistance to chloride penetration and sulfate attack is critical.
Infrastructure contractors and precast concrete manufacturers in Asia and the Middle East frequently source this material to meet specifications for bridges, tunnels, and marine structures. Guizhou Jingyang Trading Co., Ltd offers the product in bulk or 25 kg bags, with lead times and incoterms negotiated per shipment. Buyers should confirm packaging integrity and moisture content upon receipt, as exposure to humidity can affect flowability and performance.
| Chemical composition | Silicon Dioxide (SiO2) ≥ 85% |
| Particle size | 0.1 - 0.15 µm |
| Material form | Amorphous silica powder |
| Bulk density (undensified) | 200 - 700 kg/m³ (typical) |
| Bulk density (densified) | 500 - 700 kg/m³ (typical) |
| Specific surface area | 15 - 30 m²/g (typical) |
| Colour | Grey to off-white |
| Packaging | Bulk or 25 kg bags |
| pH value | 6 - 8 (standard for silica fume) |
| Moisture content | ≤ 3% (standard for bagged product) |
| Application method | Dry batch addition or slurry mix |
Guizhou Jingyang Trading Co., Ltd operates from Unit C, 25th Floor, Hengli Building in Guiyang, Guizhou Province, China. The company specialises in the import and trade of industrial minerals, with micro silica as a core product line. Its profile indicates a focus on serving international buyers, particularly in construction and refractory markets, though public response metrics are not currently available.
The supplier’s listing confirms its role as a trading intermediary rather than a direct producer, sourcing silica fume from domestic smelters for export. No certifications, production capacity, or client references are provided in the available data, so buyers are advised to request third-party test reports and factory audits where project specifications demand verification of material consistency or origin.
Micro silica, also known as silica fume, is a highly effective pozzolanic additive widely used in high-performance concrete, refractories, and ceramics industries. With SiO2 content typically exceeding 85%, this ultra-fine powder with particle sizes of 0.1 to 0.5 microns significantly enhances compressive strength, durability, and chemical resistance of construction materials. It is traded globally in bulk or bagged form, making it a high-demand import-export commodity for infrastructure and industrial manufacturing sectors.
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Sourcing Micro silica from Guizhou Jingyang Trading Co., Ltd - China Import Guide
Before ordering, verify the SiO2 content and particle size distribution through third-party testing, as these directly impact performance in concrete mixes. Request a certificate of analysis (CoA) for each batch, and confirm whether the material is densified or undensified, as this affects handling and storage requirements. For infrastructure projects, also check compliance with local standards such as ASTM C1240 or EN 13263.
Logistics for micro silica from China typically involve bulk vessel or containerised bagged shipments. Confirm lead times, as production schedules for silica fume depend on smelter output, which can fluctuate. Incoterms such as FOB Qingdao or CIF Mumbai are common, but buyers should negotiate payment terms (e.g., LC or TT) and ensure the supplier can provide packing lists and bills of lading in English for customs clearance.
Quality checks should include testing for moisture content, bulk density, and pozzolanic activity index (PAI) as per ASTM C311. Inspect bags for tears or moisture damage upon arrival, and store material in dry, ventilated areas to prevent caking. For critical applications, arrange for on-site inspection during loading and unloading, and retain samples for retrospective testing in case of disputes.
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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. Guizhou Jingyang Trading Co., Ltd, a verified supplier based in China, offers this product with key specifications including Silica Fume / Condensed Micro Silica (Densified or Undensified), SiO2: 85% - 98%, Al2O3: 0.5% - 2%, Fe2O3: 0.2% - 1.5%, Loss on Ignition (LOI): 1% - 4%, and 0.1 - 0.5 microns (平均粒径), 比表面积: 15,000 - 25,000 m²/kg. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $300/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 2811.22, making it a staple in the Chemicals & Allied Products 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. Guizhou Jingyang 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 2811.22 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 Guizhou Jingyang Trading 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 Chemicals & Allied Products 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 2811.22 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 Guizhou Jingyang Trading Co., Ltd is $300/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 Guizhou Jingyang Trading Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Micro Silica?
The supplier, Guizhou Jingyang Trading 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 2811.22. 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 Guizhou Jingyang Trading Co., Ltd. Ensure you have the necessary import licenses for Chemicals & Allied Products products in your destination country.
Is Guizhou Jingyang Trading Co., Ltd a verified supplier?
Yes, Guizhou Jingyang 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 Micro Silica?
The key specifications for Micro Silica supplied by Guizhou Jingyang Trading Co., Ltd include Silica Fume / Condensed Micro Silica (Densified or Undensified), SiO2: 85% - 98%, Al2O3: 0.5% - 2%, Fe2O3: 0.2% - 1.5%, Loss on Ignition (LOI): 1% - 4%, and 0.1 - 0.5 microns (平均粒径), 比表面积: 15,000 - 25,000 m²/kg. 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?
Guizhou Jingyang Trading 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 Guizhou Jingyang Trading Co., Ltd through our platform.
What certifications does this Micro Silica supplier hold?
Guizhou Jingyang Trading 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. Guizhou Jingyang 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 Guizhou Jingyang Trading Co., Ltd.
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