Your Leading High-purity Silicon Powder Supplier
Anhui Jingde County Chengxin Silicon Powder Factory. is a specialized producer of high‑performance silica powders.
The factory uses locally sourced quartz, advanced equipment, and a structured production system to supply both domestic and overseas buyers.
The factory uses local quartz raw materials, is equipped with advanced equipment, and adopts a standardized production system, making it a trustworthy supplier of high-quality silica powder for customers in the construction, electronics, and chemical industries.
With around 21 production and related staff, including engineers, the team focuses on consistent quality, timely communication, and long‑term customer support.
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Why Choose Us?
Rich Experience
Founded in 2000, we have operated continuously for over two decades, growing from a small workshop into a solid powder‑industry enterprise. This long track record signals stability and practical know‑how that overseas buyers can depend on.
Production Capacity
Our total annual production capacity reaches about 20,000 metric tons, with yearly sales around 50 million RMB. That scale supports substantial order volumes while still allowing focused control over production and quality.
Advanced Equipment
We run six semi‑automatic production lines and two laboratories, equipped for both milling and detailed quality checks using tools such as ball mills, screening machines, vibration testers, conductivity meters, and viscometers.
Broad Market
Our silica powder sells well at home and abroad, with exports to Southeast Asia, the Middle East and other regions, and strong customer feedback reported. This international footprint shows practical export experience, which is reassuring for new buyers in Europe or North America.
Types of High-purity Silicon Powder
Electronic Silica Powder
Electronic Silica Powder is a broad category, generally referring to all silica powder products that meet the purity, electrical performance, and physical performance requirements for applications in the electronics industry.
Electrical Grade Active Silica Powder
Electrical Grade Active Silica Powder is developed to meet the requirements of higher voltage levels, more compact designs, and longer service life for electrical insulation products. Under complex stresses such as high voltage, partial discharge, and mechanical vibration, the interface of the insulating material is often the weak link.
Ultra-fine Active Silica Powder
For ultrafine powders, activation treatment has dual importance: first, to improve compatibility and bonding force with organic systems, exerting reinforcing functions; second, to reduce the extremely high surface energy of ultrafine particles, alleviating their agglomeration tendency, enabling them to achieve truly nano-scale uniform dispersion in practical applications.
Specifications of High-purity Silicon Powder
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Product Name |
High-purity Silicon Powder |
|
Grade |
3N / 4N / 5N or customized |
|
Silicon Purity (Si) |
≥ 99.9% (3N) |
|
≥ 99.99% (4N) |
|
|
≥ 99.999% (5N) |
|
|
Appearance |
Metallic or silver-gray fine powder |
|
Density |
~ 2.33 g/cm³ |
|
Melting Point |
~ 1410–1414 °C |
|
Particle Size Range |
Coarse: 75–425 μm |
|
Medium: 58–125 μm |
|
|
Fine: 3–5 μm |
|
|
Ultra-fine/Nano: 0.1–0.5 μm |
|
|
Particle Size Distribution (PSD) |
Narrow, controlled, or customized multimodal distribution |
|
Metallic Impurities (Total) |
3N grade: ≤ 200 ppm |
|
4N grade: ≤ 30 ppm |
|
|
5N grade: ≤ 2 ppm |
|
|
Key Trace Impurities (Fe, Al, Ca, Ti, B, P, etc.) |
Controlled to ppm or sub-ppm level depending on grade |
|
Particle Morphology |
Irregular or spherical |
|
Loss on Ignition / Moisture |
≤ 0.1% |
|
Surface Properties |
Customizable for specific applications |
|
Customization Options |
Purity level, PSD, mesh size, morphology, impurity limits |
|
Main Applications |
Semiconductors, solar-grade silicon, alloy production, powder metallurgy, battery anode materials, electronic materials, high-performance ceramics, chemical industry |
Characteristic of High-purity Silicon Powder
Good Semiconductor Properties
Silicon, as a semiconductor material, has a moderate bandgap (about 1.1 eV). It is widely used to manufacture transistors, diodes, and integrated circuits, forming the foundation of modern electronics.
High Melting Point
With a melting point of approximately 1414°C, Si powder exhibits excellent thermal stability in high-temperature environments, making it ideal for high-temperature industrial applications.
Chemical Stability
Silicon powder is highly resistant to acids and bases, especially in its oxidized state, where it forms a dense oxide layer that enhances its corrosion resistance.
Excellent Photoelectric Properties
Si powder is crucial in the photovoltaic industry. Its high photoelectric conversion efficiency makes it a key material in solar cells.
Good Mechanical Strength
Although pure silicon has limited ductility, when processed through powder metallurgy, silicon powder can form materials with high strength, widely used in manufacturing mechanical components.
Storage Conditions for High-purity Silicon Powder
Airtight Containers: Store silicon powder in sealed, moisture-proof containers—such as metal cans or heavy-duty plastic drums—to prevent ambient humidity from prematurely saturating the material. Vacuum sealing or using oxygen-barrier bags with zip-lock closures provides extra protection.
Controlled Environment: Keep storage areas cool (below 35 °C) and dry. Elevated temperatures and humidity accelerate adsorption, reducing effective shelf life. Avoid placing containers near steam lines, humidifiers, or water sources.
Labeling and Inventory Management: Clearly label containers with the date of receipt and any relevant batch numbers. Adopt a first-in, first-out (FIFO) inventory system to use older stock first and prevent long-term absorption that may degrade performance.
Customization Options
Particle size
Multiple options or customizable
Shape
Multiple options or customizable
Packaging
Customizable
MOQ
Flexible customization available
Our Certificate
Quality Management System Certification Certificate, management system complies with GB/T 19001-2008 / ISO 9001:2008 standard requirements.
Our Service Advantages
Pre-sale service
Inquiry handling, sample sending, price negotiation.
Sales service
Conduct product transactions according to the responsibilities and obligations stipulated in the contract between Party A and Party B.
The products undergo rigorous factory inspections, and quality management follows industry standards.
After-sales
Communicate with customers promptly and regularly to understand their satisfaction with product quality.
Visit all customers, large and small, once a year.
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Packaging & Shipping
FAQ
We're well-known as one of the leading high-purity silicon powder manufacturers and suppliers in China. Welcome to buy high quality high-purity silicon powder made in China here and get free sample from our factory. For price consultation, contact us.
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