Exhibiting at FOOD INGREDIENTS CHINA 2025

Yantai Zhouji Marine Biotechnology Co., Ltd., located in Yantai, China, is a specialized manufacturer and exporter of marine-derived biopolymers, with a core focus on the production of alginate and its derivatives. The company is committed to the sustainable utilization of marine biological resources, transforming seaweed into functional ingredients for use in the food, pharmaceutical, textile, and cosmetic industries.

Leveraging China’s rich coastal resources and deep-rooted seaweed harvesting industry, Zhouji Marine Biotechnology integrates marine chemistry, biotechnology, and advanced manufacturing processes to deliver high-quality, application-specific products to global markets.

Core Business and Products

The company’s product line revolves around alginates extracted from brown seaweed, tailored to meet the specifications of different industrial applications:

• Sodium Alginate:

  • Primary gelling and thickening agent extracted from brown algae
  • Used in textile printing (as a reactive dye paste carrier), food processing (as a stabilizer/thickener), and pharmaceuticals (as a controlled-release matrix and wound dressing component)

• Propylene Glycol Alginate (PGA):

  • Modified alginate with emulsifying and stabilizing properties
  • Applied in salad dressings, sauces, beer foam stabilizers, and acidic beverages

• Calcium Alginate:

  • Known for biocompatibility and gel-forming properties
  • Utilized in wound care products, dental impressions, and encapsulation technology

• Potassium Alginate:

  • Alternative to sodium alginate, suitable for low-sodium formulations and health supplements

These products are produced in various grades suitable for industrial, food, cosmetic, and pharmaceutical applications.

Specialization and USP

Yantai Zhouji stands out in the Chinese alginate industry for:

• Vertical integration from raw seaweed to refined alginate
• Custom processing and particle size options for end-use compatibility
• Stable viscosity and high gel strength levels that meet international buyer demands
• High purity levels and low heavy metal content, essential for medical and food applications

The company’s experience in marine chemistry allows it to supply customized grades optimized for solubility, gel formation, and pH stability.

Production Capabilities

• Located in Yantai’s coastal industrial zone with direct access to raw brown algae from the Yellow Sea

• Annual capacity:

  • Over 3,000 metric tons of sodium alginate
  • More than 800 metric tons of calcium alginate and PGA combined

• Advanced production equipment includes:

  • Continuous extraction reactors
  • Spray and drum drying systems
  • Sieving and blending units for customized mesh sizes

The facility adheres to strict hygienic and safety protocols for both industrial and food-grade products.

Export and Shipment Records

Zhouji Marine Biotechnology has established a growing international export network, serving clients across:

• South Asia, Middle East, North America, and Western Europe

Trade insights reveal:

• Shipments made under HS Codes:

  • 130239 – Mucilages and thickeners from algae (including alginate)
  • 391390 – Modified natural polymers (e.g., PGA)

• Regular exports include:

  • Sodium alginate in 25 kg kraft paper bags
  • Drum-packed PGA for beverage manufacturers

The company handles bulk shipments ranging from 1 MT to 20 MT per container, depending on product type and grade.

Target Market

Zhouji’s alginate products serve various downstream industries:

• Textile manufacturers
• Food and beverage producers
• Medical and pharmaceutical suppliers
• Cosmetic and personal care brands
• Agricultural and horticultural product formulators

Its cost-effective and quality-consistent offerings make it a preferred supplier for OEMs and distributors seeking bulk marine-derived hydrocolloids.

Capabilities and Infrastructure

• R&D team focused on application testing and alginate performance optimization
• In-house quality testing for viscosity, gel strength, pH, purity, and moisture content
• Customized formulation services for viscosity range, mesh size, and end-use suitability
• Full traceability from seaweed sourcing to finished product documentation

Packaging is customized to buyer specifications with labeling support and batch documentation.

Certifications and Compliance

Though specific certificates are not listed online, the company operates with:

• Internal QA processes for ISO-aligned production practices
• Conformance with China GB food additive standards
• Export documentation includes:
  • COA, MSDS, origin certificate, batch production records

Food and pharma-grade buyers may request additional third-party verification.

Customer Feedback and Market Reputation

Feedback from sourcing platforms and international buyers highlights:

• Stable viscosity and gel performance critical to food and textile applications
• Flexible production capabilities for large-volume and tailored orders
• Responsive communication and logistics coordination
• Competitive pricing with solid technical support for new market entrants

Repeat orders and long-term contracts with textile and food manufacturers reinforce its credibility as a global supplier.

Major Achievements

• Annual production of over 3,000 metric tons of sodium alginate
• Exported to more than 25 countries
• Developed proprietary production process for high gel strength alginate
• Recognized as a leading marine chemical processing company in Yantai

With a focus on marine biotechnology and sustainable seaweed utilization, Yantai Zhouji Marine Biotechnology Co., Ltd. continues to advance its role as a reliable source of alginate-based ingredients to the global marketplace.