bioecon Member area
Suppliers · Research / RTO · Discovered — similar established company

QINGDAO SEAWIN BIOTECH GROUP

SEAWINNER — Marine Biotech for Better Harvests As the world’s leading manufacturer of marine-based biostimulants and specialty fertilizers, SEAWINNER integrates independent seaweed harvesting, cutting-edge R&D, and advanced production across 4 modern factories. We serve global fertilizer producers, distributors, and large-scale farms with a wide range of core biostimulant ingredients — including …

active ChinaAsia Founded 2000 Employees: over 100 (R&D team) checked 2026-10-05

Profile

Qingdao Seawin Biotech Group is an active, China-based high-tech enterprise specializing in marine biotechnology, biostimulants, and functional specialty fertilizers. Founded on August 18, 2000, as China Ocean University Bioengineering Development Co., Ltd., the company is headquartered in the Qingdao High-tech Zone. It operates four production bases with an annual output exceeding 600,000 tons and serves customers in over 80 countries.

The company focuses on four segments: marine biological fertilizers, marine biological products, environmental services, and healthy foods. Its core technology utilizes marine bio-extraction, fermentation, and biosynthesis to produce proprietary functional factors like SEAD, APAA, and GALA. Key products include the Seawinner brand, seaweed extracts, and chitosan oligosaccharides.

In 2025 and 2026, the company celebrated its 25th anniversary and received approval to establish the Ministry of Agriculture and Rural Affairs (MARA) Key Laboratory of Biostimulants and Functional Fertilizers. It is recognized as a National Manufacturing Single Champion. The company is privately held and led by Chairman Shan Junwei.

Sources#

Industry
Crop protection, Fertilisers & plant nutrition, Food ingredients, Post-harvest & processing
Topics
Biofertilizers & biostimulants, Seaweed, alginate & carrageenan, Crop protection chemicals & fertilizers, Gene synthesis, sequencing & bio-tools
Role
Research / RTO — “…st 18, 2000, as China Ocean University Bioengineering Development Co., Ltd., the company is headquartered in t…”
Why it is bioeconomy
Qingdao Seawin Biotech Group is a currently operating marine-biotech company that develops and produces seaweed/kelp-derived biostimulants and specialty fertilizers for agriculture, with active R&D and global exports.
Found via
[Rubric] China · methane-feed

Bio-solutions it supplies 1

D0Post-harvest decay control of citrus, pome, stone and tropical fruit with antagonistic yeasts (Metschnikowia, Candida, Aureobasidium), hot-water treatment and chitosan coatings — instead of synthetic post-harvest fungicides

What they offer

Products: Activator N; Electronic Dynamic Belt Weigher; Double-roller Crusher; Vertical Crusher; Rotary Drum Granulator; Disc Granulator; Double-roller Extrusion Granulator; Rotary Dryer; Hot Air Furnace | Industrial Hot Air Generator for Drying & Heating; Rotary Cooler | Industrial Rotary Cooling Equipment for Bulk Materials

Certifications: Global leading registrant of REACH certification for kelp extract; EU ECOCERT organic certification; US OMRI organic certification; Green Food Production Materials Certification; COFCC organic production input certification; Wantai Organic Production Input Certification; Organic Agricultural Production Materials Assessment Certification

Applications
Marine Biological Fertilizer · Marine Biological Product · Marine Environmental Protection Service · Marine Healthy Foods · Foliar Spray: 1-2L/ha · Fertigation: 10-20 L/ha · Foliar Spray · Drip Irrigation / Fertigation · Fertilizer Formulation
Certifications (website)
Global leading registrant of REACH certification for kelp extract · EU ECOCERT organic certification · US OMRI organic certification · Green Food Production Materials Certification · COFCC organic production input certification · Wantai Organic Production Input Certification · Organic Agricultural Production Materials Assessment Certification
Production sites
Qingdao Jiaozhou Production Base · Rushan Winsea Production Base · Rongcheng Rentai Production Base · Qingdao High-tech Zone Marine Biological Products Industry Base
Products (website)
Activator N — Seawinner Activator N is a biostimulants liquid fertilizer that combines Organic Matter with active ingredients like Alginic Acid, Polysaccharide and PGA together. A specific ratio can regulate soil pH to a favorable level. It performs quite well on root and seedling development, especially in saline-alkali soil. · Electronic Dynamic Belt Weigher · Double-roller Crusher · Vertical Crusher · Rotary Drum Granulator · Disc Granulator · Double-roller Extrusion Granulator · Rotary Dryer · Hot Air Furnace | Industrial Hot Air Generator for Drying & Heating · Rotary Cooler | Industrial Rotary Cooling Equipment for Bulk Materials · Rotary Drum Screener | Industrial Trommel Screen for Particle Size Separation · Vibrating Screener
R&D facilities
Seawin Biotech High Tech Zone Headquarters R&D Base · Precision Instrument Laboratory

Read from the company's own website: about · products · production · rnd · leadership · contact · topic · topic

News & status 6

Network: owners, partners, peers

Similar companies

Bright Moon Seaweed · Penglai Marine · Janatha Group · PT. Central Proteina Prima, Tbk · Matrix Sea Foods India Limited · Mukka Proteins Limited · Marshall Marine Products

Identity & contacts

Contacts, people and legal identity are available to members.

Sign in as a member