Ferro silicon (FeSi) is a key alloy in modern steelmaking and foundry operations. It serves as a deoxidizer, alloying element, and inoculant in converters, electric arc furnaces, and foundry melting processes. For procurement teams and metallurgical engineers, selecting a reliable Ferro Silicon supplier requires balancing factors such as chemical consistency, production capacity, export experience, and verified test documentation.
This report presents the Top 10 Ferro Silicon Manufacturers in China (November 2025) and provides a practical, SEO-focused buyer's guide for sourcing. UNG CO., LTD. holds the leading position in this ranking due to its strong production capability, stable quality, and diverse product line.
1 - UNG CO., LTD.
Core product advantage
UNG offers an integrated metallurgy and refractory product portfolio that includes ferro silicon, ferroalloys, recarburizers and related refractories. The group structure (multiple plants) supports production continuity and consistent batch control. Product pages show standard FeSi grades, inoculants and manufactured alloys suited for both foundry and steel applications.
Service & supply strengths
UNG emphasizes in-house QC, export packaging and logistics for overseas buyers. The company lists sample policies and product datasheets on public pages; multi-site production reduces single-plant risk for large-volume orders. Buyers note reasonable traceability and COA availability for export lots.
Recommended products & sample review
Recommended SKUs: FeSi lumps (Si55–Si75 range), FeSi inoculants, FeSi briquettes.
Sample review: Supplier listings indicate palletized export packing, COA on request and consistent Si content in delivered samples. For critical orders, request third-party lab verification (S, P, Al, Ca traces).
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2 - Anyang Huatuo Metallurgy Co., Ltd.
Core product advantage
Huatuo is a specialist in silicon-related alloys-FeSi, calcium silicon, Si-based inoculants and silicon briquettes. Their product range commonly targets foundry inoculation and deoxidation for steel grades, with clear specification pages for FeSi lumps and powders.
Sialloy
Service & supply strengths
The company shows export experience, ISO-style documentation on some listings, and the ability to fulfil mid-sized export orders. They provide lab certificates and flexible MOQ terms on B2B portals.
Recommended products & sample review
Recommended SKUs: FeSi Si55/Si65 lumps; calcium-silicon alloys for inoculation. Sample review: Marketplace images and listing reviews highlight on-time shipment and conformity with declared Si content; always request batch COA for S and P limits.
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3 - Zhenxin Ferroalloy (ZX Ferroalloy)
Core product advantage
Zhenxin offers a wide ferroalloy portfolio-FeSi, FeCr, Si-based alloys and specialty inoculants. Corporate resources emphasize quality control and a full product catalogue to support steel and foundry customers.
Service & supply strengths
ZX highlights global delivery channels and trade experience. Their site publishes market analysis and product resources useful for technical buyers. The group approach enables bulk exports and coordinated logistics.
Recommended products & sample review
Recommended SKUs: FeSi lumps (Si65/Si72), FeSi powder for inoculants. Sample review: Customer references on the corporate blog mention consistent chemistry and dependable packaging. Request specific removal of fines and screening for foundry-grade shipments.
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4 - Inner Mongolia Xinda Industrial Co., Ltd.
Core product advantage
Xinda operates in a resource-rich northern ferroalloy region; they produce FeSi and allied alloys with access to local raw materials and power advantages. Their product listings emphasize consistent lump sizing and multiple Si grades.
Service & supply strengths
Located in Inner Mongolia, Xinda benefits from integrated resource logistics and can supply large volumes. Export channels and QA procedures are noted on supplier pages.
Xinda Ferroalloys
Recommended products & sample review
Recommended SKUs: FeSi Si55–Si75 lumps and screened granules.Sample review: Buyers report robust packaging and favor this region for stable long-term contracts where volume matters. Confirm moisture control for container shipments.
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5 - Shandong Jinling Group (Jinling Ferroalloy)
Core product advantage
Jinling is a diversified industrial group with metal, chemical and energy businesses. The group's ferroalloy and FeSi lines benefit from downstream integration and industrial scale, often supplying regional steel mills and exporters.
Service & supply strengths
Being part of a larger industrial group allows Jinling to offer stable logistics, port access and flexible export documentation. They typically handle larger purchase orders and long-term contracts with steel producers.
Recommended products & sample review
Recommended SKUs: FeSi lumps, briquettes and briquetted alloys with consistent sizing. Sample review: Group suppliers often ship through Qingdao/Tianjin ports; for export lots confirm sampling practice and certificate issuance.
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6 - Inner Mongolia Xinxin Silicon Industry Co., Ltd.
Core product advantage
Xinxin positions itself as a major silicon-alloy producer in Inner Mongolia with FeSi, Si metal and cored wire products. Their industrial scale supports varied Si grades and downstream finishing.
Xinxin Silicon
Service & supply strengths
Large local capacity and industry ties make Xinxin an option for buyers needing steady monthly volumes and consistent quality. Export listings emphasize technical service for alloy selection.
Recommended products & sample review
Recommended SKUs: FeSi lumps/granules and Si-based inoculants. Sample review: Industry buyers praise consistent chemistry; verify COA for trace elements when ordering for low-alloy steel.
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7 - Qinghai Huadian Ferro-Alloy Co., Ltd.
Core product advantage
Qinghai Huadian is a long-established ferroalloy producer in Qinghai with ore-heated furnaces producing FeSi at scale. The company has reported large annual output and exports to multiple regions.
Service & supply strengths
They advertise significant furnace capacity and export experience to markets including Asia and Europe. This producer suits buyers who need bulk volumes and higher continuity.
Recommended products & sample review
Recommended SKUs: FeSi Si72 and Si65 lumps, bulk shipments. Sample review: Large-capacity producers typically have strong shipping throughput but check screening procedures to avoid high-fines content.
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8 - Anyang Mingrui Silicon Industry Co., Ltd.
Core product advantage
Producers in the Anyang cluster (including Mingrui and others) specialize in FeSi, CaSi and inoculants for foundry and steel customers. These firms combine metallurgical know-how with accessible supply in the Henan industrial cluster.
Service & supply strengths
Anyang suppliers emphasize responsive sampling, short domestic lead times and flexible packaging for export. Many post COA and physical factory photos on B2B portals.
Recommended products & sample review
Recommended SKUs: FeSi lumps, screened granules and CaSi blends. Sample review: Buyers often use the Anyang cluster for mid-sized trials before scaling. Verify S/P limits for steelmaking specs.
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9 - Jiangyin Hongrui
Core product advantage
Although Hongrui is often cited for cored wire and related alloy products, their regional OEM profile also lists ferroalloys and Si-based materials. They represent the east-China OEM base supplying competitive pricing and port logistics.
Service & supply strengths
Hongrui's location near the Yangtze economic belt gives logistical advantages for export; their supplier pages claim multiple production lines and international shipments.
Recommended products & sample review
Recommended SKUs: FeSi lumps for foundry use and Si-based cored wire inputs.Sample review: Good for cost-sensitive buyers; confirm COA and PSD before committing to long-term contracts.
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10 - Jiangsu Benai New Materials Co., Ltd.
Core product advantage
Benai develops and manufactures ferro-alloys such as ferro-silicon magnesium, ferro-silicon barium, ferro-silicon strontium, ferro-silicon zirconium, low-silicon nodulants and inoculants. Their focus on alloy blends for nodular cast iron and ductile iron pipes gives them cross-industry versatility.
Service & supply strengths
They claim advanced equipment, complete production lines and sound test methods. Their products are sold domestically and exported to Southeast Asia, Europe and the U.S. Flexibility for international customers appears in their profile.
Recommended products & sample review
Recommended SKUs: Ferro-silicon magnesium nodulant, ferro-silicon barium alloy, standard FeSi lumps for foundry/steel use.Sample review: Supplier listing indicates consistent export shipments and good reputation in foundry/ductile iron pipe industry; buyers should still demand COA for Si %, Ca/Mg content, and fines content.
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China's ferro silicon industry remains broad and diverse, supported by both coastal and inland production clusters across Inner Mongolia, Henan (Anyang), Shandong, and Qinghai. These regions contribute substantial output, while numerous OEMs and regional manufacturers enhance market flexibility through pilot-scale supply and competitive pricing.
As of November 2025, the companies listed above represent reliable Ferro Silicon suppliers with verified product documentation, active export operations, and proven production capacity suited for international procurement. UNG CO., LTD. ranks at the top of this list, recognized for its integrated metallurgy portfolio that includes Ferro Silicon and related alloy materials, supported by transparent product information and consistent quality standards.
