Import Micro Silica Fume — Buy in wholesale FOB from Supplier in China
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Micro Silica Fume
The product is micro silica fume, an amorphous silicon dioxide pozzolan supplied by Quanzhou Winitoor Industry Co., Ltd. It consists of ultra‑fine particles with an average diameter of 0.15 - 0.20 µm and a specific surface area of 15 000 - 20 000 m² kg⁻¹. The material complies with ASTM C1240 and EN 13263 specifications, and is offered in densified, undensified or pelletised forms. Typical packaging options are 25 kg kraft bags, 1 MT jumbo bags and 1 MT supersacks for bulk export.
The grey‑white powder exhibits high electrical resistivity, low permeability and excellent resistance to chlorides, acids and sulfates, making it a reliable pozzolan for aggressive environments. In the concrete industry the product is routinely used to raise compressive strength and durability of high‑performance mixes, especially in marine structures and bridge decks. Typical bulk density ranges from 0.6 to 0.8 g cm⁻³ (typical) and the material can be stored in sealed containers to prevent moisture uptake. Compared with ordinary fly ash, the finer particle size provides a higher reactivity that accelerates early strength development.
Buyers such as ready‑mix concrete producers, precast manufacturers and refractory fabricators source this additive to meet project specifications for durability and chemical resistance. Minimum order quantities are not disclosed in the listing; interested importers should confirm the required batch size with the supplier. Shipping is usually arranged in bulk containers under CIF or FOB terms, with the supplier able to load 25 kg bags into standard 20‑ft containers. Payment is typically made by T/T against a commercial invoice, but exact terms must be negotiated directly with the supplier.
| Material | Amorphous Silicon Dioxide (SiO₂) |
| Particle Size | 0.15 - 0.20 µm |
| Specific Surface Area | 15 000 - 20 000 m² kg⁻¹ |
| Appearance | Grey‑white powder |
| Form Options | Densified, undensified, pelletised |
| Packaging | 25 kg bags, jumbo bags, 1 MT supersacks |
| Standard Compliance | ASTM C1240, EN 13263 |
| Typical Bulk Density | 0.6 - 0.8 g cm⁻³ (typical) |
| Typical Moisture Content | <0.5 % (typical) |
| Typical pH in Water | ~9 (typical) |
Quanzhou Winitoor Industry Co., Ltd. is located at Rm#801, No. 3 Building, Jialin Square, Ruixiang Garden, Citong Road, Quanzhou 362000, Fujian, China. It is classified as an imported‑tier supplier with a harbor trust rating. The company's response rate is currently 0 %, and no average response time is recorded, so buyers should allow extra time for communication.
The firm lists micro silica fume as its primary offering and highlights compliance with ASTM C1240 and EN 13263. No additional certifications are stated in the listing; importers should request any relevant quality certificates before purchase. The supplier indicates that the material is packaged for bulk export and can be loaded into standard shipping containers for overseas delivery.
Micro silica fume is a high-reactivity pozzolanic material composed of ultra-fine amorphous silicon dioxide particles, generated as a byproduct of silicon and ferrosilicon alloy production. Widely specified under ASTM C1240 and EN 13263 standards, it is a key additive for high-performance concrete, shotcrete, grout, and refractory applications, significantly improving compressive strength, durability, and chemical resistance. Available in densified, undensified, and pelletized forms, typically packaged in 25kg bags, jumbo bags, or 1MT supersacks for bulk export shipment. A critical input material for construction projects requiring superior durability, including marine structures, bridges, and industrial floors.
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Sourcing Micro Silica Fume from Quanzhou Winitoor Industry Co., Ltd. - China Import Guide
Before placing an order, buyers should verify the particle size, specific surface area and the selected form (densified, undensified or pelletised) against project specifications. Request a recent test report that includes laser‑diffraction and BET surface‑area measurements, and confirm that the supplied grade carries the ASTM C1240 / EN 13263 compliance certificate. Also check that the packaging size aligns with the intended transport method.
Logistics for silica fume typically involve loading 25 kg bags into 20‑ft or 40‑ft containers under FOB or CIF terms. As the listing does not disclose lead time, importers should ask the supplier for the expected production schedule and estimated dispatch date. Payment is commonly arranged by T/T, but larger volumes may allow a letter of credit or open‑account terms after a satisfactory performance history.
Quality assurance usually includes a pre‑shipment inspection by a third‑party laboratory, covering moisture content, particle‑size distribution and compliance with the cited standards. Importers are advised to arrange an on‑site or container inspection and to obtain the test certificates before releasing payment. Keeping records of the inspection report and the material safety data sheet will support downstream compliance and warranty claims.
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30 suppliersBuy Micro Silica Fume in Bulk — Verified Supplier in China
When sourcing Micro Silica Fume for your business, securing the right balance of quality and cost is essential. Quanzhou Winitoor Industry Co., Ltd., a verified supplier based in China, offers this product with key specifications including Densified, Undensified, or Pelletized, SiO2: 85% - 98% (amorphous), and 0.1 - 0.5 microns (median ~0.15 µm). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $120140/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 3824.40, making it a staple in the Construction Materials sector with strong demand from importing countries worldwide.
Micro Silica Fume Specifications, Trade Terms & Pricing
Importing Micro Silica Fume requires careful attention to shipping logistics, customs compliance, and secure payment terms. Quanzhou Winitoor Industry 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 3824.40 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 import export marketplace designed to make cross-border trade secure and efficient.
About Quanzhou Winitoor Industry Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Micro Silica Fume 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 Construction Materials category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Micro Silica Fume — Shipping, Logistics & Customs
Importing Micro Silica Fume 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 3824.40 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 Fume
What is the wholesale price of Micro Silica Fume?
The current listed wholesale price for Micro Silica Fume from Quanzhou Winitoor Industry Co., Ltd. is $120140/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 Quanzhou Winitoor Industry Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Micro Silica Fume?
The supplier, Quanzhou Winitoor Industry Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Micro Silica Fume. 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 Fume?
For international shipping and customs clearance, Micro Silica Fume is classified under HS Code 3824.40. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Micro Silica Fume from China?
To import Micro Silica Fume from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Quanzhou Winitoor Industry Co., Ltd.. Ensure you have the necessary import licenses for Construction Materials products in your destination country.
Is Quanzhou Winitoor Industry Co., Ltd. a verified supplier?
Yes, Quanzhou Winitoor Industry 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 Fume?
The key specifications for Micro Silica Fume supplied by Quanzhou Winitoor Industry Co., Ltd. include Densified, Undensified, or Pelletized, SiO2: 85% - 98% (amorphous), and 0.1 - 0.5 microns (median ~0.15 µm). 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 Fume?
Quanzhou Winitoor Industry Co., Ltd. offers Micro Silica Fume 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 Fume the most?
Micro Silica Fume is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Quanzhou Winitoor Industry Co., Ltd. through our platform.
What certifications does this Micro Silica Fume supplier hold?
Quanzhou Winitoor Industry Co., Ltd. maintains international quality certifications. These ensure that the Micro Silica Fume meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Micro Silica Fume on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Quanzhou Winitoor Industry 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 Quanzhou Winitoor Industry Co., Ltd..
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