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Welcome to Bright Seaweed

Leading manufacturer of high-quality marine bioactive ingredients including sodium alginate, mannitol, and seaweed-based functional materials.

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High Quality

Strictly control quality to provide customers with high-quality products and services.

Credit Standing

We always adhere to the corporate purpose of integrity first, uphold the contract spirit.

Knight Service

Professional team service, carefully and timely to solve any problems for our customers.

About Bright Seaweed

Qingdao Bright Moon Seaweed Technology is a leading high-tech enterprise based in Qingdao, China, specializing in the research, development, and production of marine bioactive substances derived from kelp and other seaweeds.

As a key manufacturer of sodium alginate and related alginate products, we serve global industries including food, pharmaceuticals, cosmetics, textiles, and agriculture. Our mission is to harness the power of the ocean to deliver sustainable, high-performance ingredients.

We operate under multiple national recognitions, including the State Key Laboratory of Seaweed Fertilizers, the National Enterprise Technology Center, and the National and Local Joint Engineering Research Center.

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Qingdao Bright Moon Plant

Our Core Industries

Alginate Industry

Natural food ingredients extracted from brown algae with thickening, suspension, emulsifying, water retention, and gel properties. Widely used in food, medicine, medical materials, cosmetics, and textile printing.

Sugar Alcohol Industry

Mannitol and sorbitol used in medicine, food, and chemical industries. Low calorific value, cooling effect, anti-caries properties. Used as sweeteners and moisturizers in food, daily chemicals, and pharmaceuticals.

Marine Biomedical Materials

Alginate and chitosan with excellent biocompatibility, high hygroscopicity, and biodegradability. Ideal for medical dressings, masks, surgical sutures, and hygiene products.

Our Products

Alginate ingredients for diverse applications. Choose your specification.

Sodium Alginate

A natural polysaccharide from brown seaweed. Used as a thickener, stabilizer, and gelling agent in food, pharmaceuticals, and cosmetics.

  • • Natural food-grade thickener
  • • High water retention
  • • Excellent gel strength
  • • Applications: dairy, beverages, bakery, medical
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Calcium Alginate

Milk white to light yellow powder, insoluble in water. Used in wound dressings, textiles, and controlled release formulations.

  • • High dispersibility
  • • Biocompatible and biodegradable
  • • Ideal for medical applications
  • • Used in surgical sutures and dressings
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Potassium Alginate

Milky-white or light yellow powder with excellent hydrophilic and gelling properties. Stronger gel than sodium alginate.

  • • High gel strength
  • • Good flowability
  • • Used in food and pharma
  • • Stable in low pH environments
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Ammonium Alginate

Light yellow to brown amorphous powder or granule. Features hydrophilic, thickening, and gel-forming properties.

  • • High solubility
  • • Used in specialty coatings
  • • Stable in alkaline conditions
  • • Applications in textiles and adhesives
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Propylene Glycol Alginate (PGA)

Derived from alginic acid extracted from natural seaweed. White to yellowish powder with excellent emulsifying and stabilizing properties.

  • • Acid-stable thickener
  • • Used in acidic beverages
  • • Prevents syneresis
  • • FDA and EU approved
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Alginic Acid

Natural polysaccharide extracted from seaweed. Flaxen powder, insoluble in water. Precursor for alginate salts.

  • • Used in pharmaceuticals
  • • Forms gels in acidic conditions
  • • Stabilizer in emulsions
  • • Raw material for alginate production
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SD Mannitol

Spray-dried mannitol used as a pharmaceutical excipient. Ideal for direct compression tablet processes.

  • • Free-flowing powder
  • • Excellent compressibility
  • • Low hygroscopicity
  • • Used in chewable tablets
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Crystalline Mannitol

Crystalline particles with defined morphology. Used in pharmaceuticals, food, and as a sweetener.

  • • High purity crystals
  • • Cooling effect in mouth
  • • Non-cariogenic
  • • Used in diabetic foods
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Why Choose Bright Seaweed?

🔬

R&D Excellence

Backed by State Key Laboratory and national research centers.

🌍

Sustainable Sourcing

Marine kelp-based raw materials from renewable sources.

✅

Global Compliance

Products meet FDA, EU, and international standards.

📦

Custom Solutions

Tailored specifications and packaging for your needs.

100+

Global Clients

20+

Years Experience

6

Core Industries

10+

National Awards

Frequently Asked Questions

What is sodium alginate used for?

Sodium alginate is used as a thickener, stabilizer, and gelling agent in food (like ice cream and dressings), pharmaceuticals (tablet binders), and medical applications (wound dressings).

Is your mannitol suitable for pharmaceutical use?

Yes, our SD Mannitol and Crystalline Mannitol are produced under strict quality control and are widely used as excipients in direct compression tablets and chewable formulations.

Are your products sustainably sourced?

Absolutely. We use marine kelp as our primary raw material, which is a renewable and fast-growing resource. Our processes are designed to minimize environmental impact.

Do you offer custom specifications?

Yes, we provide customized particle size, viscosity, gel strength, and packaging options to meet specific customer requirements.

Get in Touch

For inquiries, samples, or technical support, please visit our official website to contact the Bright Seaweed team.

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