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Who We Are
Quality Commitment

COMMITMENT TO HIGH-QUALITY INGREDIENTS

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A 3,000 km Journey In Search Of The Best Soybeans

We cherish every gift from nature, following the belief that “good soybeans brew good soy source.”

In the fertile black soil of Northeast China, Haday soybeans take root and thrive under abundant sunlight.

Each soybean that enters the Haday production line undergoes more than 200 rigorous inspections-including appearance, protein content, moisture, heavy metals, and pesticide residues-ensuring that every soybean is both beautiful and nutritious.

Good soybeans make good soy source, and Haday understands this commitment.

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The Secret Of Delicious Oyster Sauce

Haday carefully selects plump oysters harvested from China’s premium oyster regions during specific seasons. To retain maximum freshness, harvesting, transportation, and initial processing are all completed within 48 hours.

Three core technologies guarantee the signature freshness: slow extraction at low temperature to preserve flavor essence, ultrafine filtration for crystal-clear oyster juice, and precise simmering to elevate the taste—enhancing every dish with rich, savory umami.

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The Taste Of Freshness Lies In Water

Water is the key medium of soy sauce flavor. Haday has invested over 100 million RMB to study how specific ions in water influence the final aroma of soy sauce, developing an industry-leading intelligent purification system.

In our dark factory, we produce “Haday Brewing Water,” meeting direct-drinking standards.

With pure water comes premium soy sauce—bringing safety and freshness to every meal.

ADHERING TO TRADITIONAL
SUNLIGHT BREWING

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Inheriting 400 years of traditional craftsmanship, Haday remains faithful to every step—bean selection, cooking, koji cultivation, sunlight fermentation, filtration, and oil extraction. At the Haday Sunlight Factory located at latitude 23°N, which enjoys over 300 sunny days a year, our 600,000 m² natural Sunlight Drying Yard is scientifically designed—the height, angle, and transparency of each glass-covered fermentation pool are optimized to ensure every drop of soy sauce absorbs the maximum sunlight. Through day-and-night exposure, soybean nutrients are broken down into amino acids and sugars easily absorbed by the human body, infusing every drop with the taste of sunlight.

SAFEGUARDING FOOD SAFETY WITH THE STRICTEST STANDARDS

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At Haday, “quality is the lifeline.” We exercise stringent control over every step—from raw material selection to production, storage, and transport.

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Multiple Layers Of Quality Inspection

Each bottle of soy sauce must pass 494 inspection points and 2,000 individual tests to ensure absolute quality.

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Beyond National Standards

For finished products, Haday’s testing indicators exceed national standards in both quantity and stringency. With high transparency and uncompromising benchmarks, we ensure consumers enjoy food that is safe, healthy, and trustworthy.

SAFEGUARDING FOOD SAFETY WITH THE STRICTEST STANDARDS

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At Haday, “quality is the lifeline.” We exercise stringent control over every step—from raw material selection to production, storage, and transport.

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Multiple Layers Of Quality Inspection

Each bottle of soy sauce must pass 494 inspection points and 2,000 individual tests to ensure absolute quality.

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Beyond National Standards

For finished products, Haday’s testing indicators exceed national standards in both quantity and stringency. With high transparency and uncompromising benchmarks, we ensure consumers enjoy food that is safe, healthy, and trustworthy.

“HAITIAN STRAIN” BRING OUT THE BEST FLAVOR IN EVERY DROP

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Soy sauce is the “magician” of flavor, and microorganisms are its “core chip.”
Across three generations, Haday’s fermentation experts have continuously improved the key microbial strains used in koji making—now upgraded through more than a dozen generations.
Our self-developed “HAITIAN STRAIN” break down soybean protein into amino acids essential for soy sauce, retaining traditional color and flavor functions while enhancing dishes with a distinctive, rich aroma unique
to Haday.

“LIGHTHOUSE FACTORY”
— ULTIMATE QUALITY CONTROL ACROSS THE ENTIRE CHAIN

By 2025, Haday will become the world’s first soy sauce brewing “Lighthouse Factory.” With five world-class technologies, we have built an intelligent end-to-end quality assurance system—from production to flavor—delivering on our promise of safe, delicious taste.

Lighthouse Factory Video
AI Soybean Selection Technology

Our exclusive “AI Bean Face Recognition” system scans 2.5 trillion soybeans annually in 360° detail, upgrading traditional visual inspection to millimeter-level precision.

NIR Online Spectral Detection

Embedded in 316L food-grade sealed pipelines, this system performs real-time monitoring of every drop of soy sauce, detecting molecular-level anomalies 24/7 and eliminating human inspection blind spots.

AI Big Data Fermentation

Continuously monitoring weather, raw materials, and equipment, the AI algorithm calculates optimal fermentation plans, improving protein utilization and producing fresher, richer soy sauce.

AI Electronic Nose

With a “Flavor Genome Database” of over 100 aroma profiles, this converts master brewers’ sensory experience into quantifiable data—ensuring consistent sourness, caramel aroma, and other complex flavors that define the authentic taste of China.

AI Precision Filling

On ultra-high-speed filling lines producing 52,000 bottles per hour, machine vision maintains ±0.1 mL accuracy while simultaneously detecting bottle defects. The filling error rate is below one in a million—ensuring every drop is precise.

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HADAY Hotline
400-8899-813
Mail
htservice@haday.cn
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