China’s Leading GFS Feed Silos Manufacturer — Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel)

China’s Leading GFS Feed Silos Manufacturer — Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel)

In the age of smart agriculture and sustainable food security, the livestock, poultry, and aquaculture industries are evolving faster than ever. Efficiency, precision, and hygiene have become the foundations of modern feed management. As animal nutrition technology advances, feed storage plays a more strategic role in ensuring quality, safety, and economic performance.

At the heart of this transformation stands Shijiazhuang Zhengzhong Technology Co., Ltd., also known globally as Center Enamel—China’s leading manufacturer of GFS (Glass-Fused-to-Steel) feed silos, and one of the world’s most trusted names in bolted steel storage solutions.

For over three decades, Center Enamel has dedicated itself to innovating advanced tank and silo solutions for agriculture, water treatment, and renewable energy sectors. With unmatched expertise in Glass-Fused-to-Steel technology, international manufacturing strength, and a legacy of quality recognized in over 100 countries, Center Enamel continues to set new standards for global feed storage excellence.

The Global Demand for Smarter Feed Storage

The global animal feed industry feeds billions of people indirectly every day. Whether for poultry, swine, dairy, or aquaculture, feed is the foundation of livestock productivity. According to the FAO, world feed production exceeded 1.2 billion tons in 2024 — and the figure keeps growing. This rapid expansion brings new challenges: higher expectations for grain hygiene, feed freshness, and warehouse efficiency.

Traditional storage options such as galvanized steel, concrete bunkers, and epoxy-coated silos are quickly being replaced by more durable and sustainable alternatives. Glass-Fused-to-Steel feed silos represent this new generation of storage — offering superior corrosion resistance, lower maintenance costs, and longer service life.

Center Enamel’s GFS feed silos deliver exactly what modern producers demand:

• Reliability across climates and feed types.
• Protection from moisture and microbial contamination.
• Durability exceeding 30 years of continuous operation.
• Compatibility with automated feed systems for precision agriculture.

About Center Enamel — Engineering Excellence

Founded in Shijiazhuang, Hebei Province, Center Enamel has grown from a specialized enamel tank producer into a global leader in bolted storage tanks and silos. The company is also recognized as the first manufacturer in China to develop and produce Glass-Fused-to-Steel (GFS) tanks, pioneering innovations that now define the industry standard.

The company’s 150,000 m² production base includes Asia’s largest enameling facilities, equipped with:

• CNC machining lines for precision panel cutting.
• Automated double-sided enameling furnaces operating at 820–930°C.
• Laser inspection and stress testing labs for enamel quality verification.
• Gas-tight assembly technology for bolted seal perfection.

With a professional R&D team and nearly 200 patents, Center Enamel leads the industry in applied enamel science, engineering design, and environmental protection. The company maintains compliance with the highest global standards, including ISO 9001, EN10025, NSF/ANSI 61, WRAS, ISO 28765, and FM, among others.

Today, Center Enamel’s products are exported to more than 100 countries and regions, with more than 30,000 successful projects across the Americas, Europe, Africa, Asia, and Oceania.

What Are GFS Feed Silos?

GFS (Glass-Fused-to-Steel) feed silos, also known as Glass-Lined Steel silos, are advanced modular storage systems designed for feed, grains, and dry bulk materials. The technology fuses molten glass to high-strength steel plates at temperatures up to 930°C, resulting in a chemically bonded coating that combines the structural strength of steel with the corrosion resistance of glass.

Every GFS plate is double-coated — interior and exterior — ensuring comprehensive protection against oxidation, chemical corrosion, and microbial attack. The result is a silo that is non-porous, gas-tight, and highly durable, outperforming galvanized or painted systems by decades.

For feed producers, this means:

• Nutritional preservation — feed remains dry and microbiologically stable.
• Zero contamination risk — inert surfaces ensure food safety compliance.
• Minimal maintenance — smooth glass-like finish resists adhesion and is easy to clean.
• Cost efficiency — long lifespan reduces total lifecycle costs by up to 50%.

The Science Behind GFS Technology

Center Enamel’s Glass-Fused-to-Steel process ensures that every tank and silo plate achieves uniform thickness, perfect adhesion, and long-term stability. The glass coating becomes an integral part of the steel rather than just a surface layer.

Production process overview:

• Steel selection: High-strength, low-carbon steel ensures structural stability.
• Pre-treatment: The steel is degreased, blasted, and treated for enamel bonding.
• Enameling: A glass slurry is electrostatically applied to both sides.
• Firing: Panels are baked at 820–930°C, fusing glass to steel.
• Testing: Enamel-coated plates undergo impact, adhesion, and porosity tests.
• Assembly: Bolted on-site using high-tensile fasteners and chemical-resistant sealants.

The resulting surface offers a Mohs hardness of 6.0, equivalent to quartz, and a pH tolerance from 1 to 14 — perfect for withstanding the variable conditions of feed storage.

Applications of GFS Feed Silos

Center Enamel’s GFS feed silos are versatile and can accommodate multiple feed types, raw materials, and environmental conditions.

Core applications include:

• Livestock Feed Storage — for poultry, pig, beef, and dairy operations.
• Aquaculture Feed Storage — for shrimp, fish, and marine farming facilities.
• Grain and Raw Material Storage — for corn, wheat, soybeans, and additives.
• Feed Mill Integration — for batching, mixing, and automatic conveying systems.
• Seed and Fertilizer Storage — for multi-use agricultural control hubs.

Each silo system can be integrated with modern automation such as feed level sensors, aeration fans, and discharge augers, enabling total control of feed logistics under the principles of precision farming.

Advantages of Center Enamel GFS Feed Silos

1. Unrivaled Durability

The GFS coating is resistant to corrosion, UV light, and chemical attack, making it ideal for environments with high humidity, temperature fluctuations, or saline exposure.

2. Superior Hygiene

Smooth, non-porous enamel surfaces resist bacteria, fungi, and mold growth — maintaining feed safety and nutritional integrity.

3. Airtight and Moisture-Proof

Ensures that feed remains dry and uncontaminated while reducing oxygen infiltration, which can oxidize fats and degrade feed quality.

4. Quick Installation

The modular bolted system significantly reduces construction time compared to traditional concrete or welded silos. Projects are typically completed in weeks, not months.

5. Low Maintenance and Long Lifecycle

Minimal servicing is required over 30+ years, providing unbeatable long-term value.

6. Scalability

Easily expandable designs allow additional silos or larger capacity units to be added without disrupting operations.

7. Sustainability

Manufactured with eco-friendly processes, GFS silos are recyclable, non-toxic, and comply with international environmental standards.

Structural Design and Engineering Features

Center Enamel designs each GFS feed silo with detailed structural analysis to meet region-specific standards — from wind load to seismic resistance. Using advanced software such as STAAD.Pro and AutoCAD 3D, engineers model every plate, ladder, and connector to conform to both AWWA D103-09 and EN 1090 codes.

Key design elements:

• Capacity Range: 20 m³ – 60,000 m³.
• Enamel thickness: 0.25–0.45 mm per side.
• Roof options: Aluminum dome, conical steel, or self-supporting covers.
• Foundation types: Concrete ring or reinforced slab.
• Access systems: External ladders, platforms, and maintenance hatches.
• Safety elements: Guardrails, fall-arrest systems, and OSHA-compliant access.

Optional accessories include:

• Aeration and humidity control systems.
• Feed level sensors (ultrasonic or radar-based).
• CO₂ inert gas feeds for oxygen displacement.
• Automatic loading/unloading augers.
• Dust suppression hoods.

Each silo system is tailored to customer demand, ensuring maximum yield protection and operational reliability.

Manufacturing Excellence — Quality You Can See

Center Enamel’s production excellence stands as a model for industrial precision in China’s tank manufacturing sector.

• Annual output: Over 300,000 enamel panels produced under ISO 9001 quality systems.
• Automated enameling lines guarantee consistent coating and curing for every batch.
• High-voltage holiday testing (1500V) ensures zero pinholes or microcracks.
• Thermal cycling tests simulate decades of material expansion and contraction.

Every plate, bolt, and seal shipped passes multiple inspection steps before leaving the factory. Clients receive comprehensive documentation including drawings, test certificates, and maintenance manuals.

Global Market Presence and Projects

Serving diverse markets across six continents, Center Enamel has supplied GFS feed silos and agricultural storage solutions to more than 100 countries, earning trust through performance and reliability.

Representative Project Examples:

• Italy Granary Project (2024): GFS silos installed to support feed production under EU feed hygiene laws.
• France Corn Feed Project (2023): Customized silos with internal aeration systems for high-moisture cereals.
• Vietnam Poultry Feed Plant (2023): Multiple 5,000 m³ units bolted on-site for one of Southeast Asia’s largest feed producers.
• Australia Dairy Cooperative (2022): Feed silos paired with smart sensors and digital inventory control systems.
• Brazil Aquafeed Storage (2022): Special coating designed for humid coastal environments.

These successes reflect Center Enamel’s ability to deliver large-scale, turnkey feed storage solutions with international quality assurance.

Commitment to Quality, Safety, and Environmental Protection

Center Enamel’s corporate philosophy integrates engineering innovation with environmental stewardship. Its plants run on eco-efficient systems powered in part by renewable energy, with 95% wastewater recycled and VOC emissions minimized.

Certifications held include:

• ISO 9001: Quality management.
• ISO 14001: Environmental management.
• ISO 45001: Occupational safety.
• EN ISO 28765: Glass-lined tank standards for industrial applications.
• WRAS & NSF: Potable contact approvals.
• FM & BSCI: Safety and social responsibility.

With these credentials, Center Enamel consistently meets or exceeds industry norms for environmental performance and worker well-being.

Smart Feed Storage — Integrating Digital Technologies

Center Enamel’s Smart Feed Silo Systems combine mechanical excellence with advanced automation tools. By integrating digital equipment, operators can gain full visibility and predictive control of feed logistics.

Key smart features include:

• IoT Sensors for real-time monitoring of temperature, humidity, and fill level.
• PLC Automation Systems enabling synchronized feed distribution.
• Cloud-based Control Platforms for remote operation and performance analytics.
• AI Predictive Maintenance tools to prevent component wear or downtime.

These intelligent systems support the growing need for sustainable, data-driven agriculture—empowering farmers and mill operators to achieve efficiency, precision, and cost control.

Service Commitment — From Design to Lifetime Support

Center Enamel ensures that every client receives complete, world-class service before, during, and after installation.

Comprehensive support includes:

• Site Assessment & Design Consulting.
• Customized Silo Engineering with 3D Modeling.
• Factory Fabrication & Quality Certification.
• Shipping Logistics and On-Site Supervision.
• Commissioning, Training, and Remote Support.
• Long-term After-Sales Service & Spare Parts Supply.

This turnkey service philosophy ensures smooth project execution and optimal silo operation for decades, making Center Enamel a reliable long-term partner to both multinational corporations and local agricultural businesses.

Competitive Advantages — Why Center Enamel Leads the Market

• Unmatched R&D Capacity: Nearly 200 patents and partnerships with scientific institutions.
• Extensive Global Reach: Projects executed in more than 100 countries.
• Proven Field Experience: Over 30,000 tank installations across multiple sectors.
• Cost Efficiency: Factory-direct production reduces overhead and delivery time.
• Exceptional Quality Assurance: Certified under international standards with independent inspection reports.
• Customization & Flexibility: From small feed bins to large industrial feed storage parks.

These advantages solidify Center Enamel’s position as China’s foremost feed silo manufacturer and a top-tier global brand in engineering innovation.

Looking Ahead — Innovating the Future of Agricultural Storage

As the world transitions toward digitalized and green agriculture, Center Enamel continues to lead research in materials science, renewable energy integration, and silo automation.

Future developments include:

• Nano-enamel coatings with enhanced corrosion and self-cleaning properties.
• Hybrid feed silos combining solar roofing for self-powered operations.
• Carbon-neutral manufacturing processes aligned with China’s 2060 climate goals.
• Expansion of service centers in Europe, Africa, and the Americas for faster global support.

Driven by this spirit of innovation, Center Enamel remains dedicated to advancing agricultural infrastructure and contributing to global food security through technology and sustainable engineering.

Building a Sustainable Future for Global Feed Storage

In a world where feed integrity, efficiency, and sustainability define agricultural success, Shijiazhuang Zhengzhong Technology Co., Ltd. (Center Enamel) stands as the symbol of reliability and innovation.

With decades of experience, industry-leading GFS technology, and a reputation for world-class quality, the company redefines what it means to store feed safely, efficiently, and sustainably. Its GFS feed silos deliver not only the strength of steel and the protection of glass but also the peace of mind that comes from working with a trusted global partner.

From small-scale farms to international feed manufacturers, clients depend on Center Enamel to protect their most valuable commodity — feed quality. In doing so, the company helps build a sustainable, efficient, and resilient agricultural future for generations to come.