What certifications does the product have?

The product is certified with ISO9001, ISO, and Omri.

What is the physical state and solubility?

It is a black or brown powder or flake, with a pH of 8-10, and is 100% water soluble.

Alga 21st Alginic Acid Seaweed Extract

Name: Alga 21st Alginic Acid Seaweed Extract
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 1992457992

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

US$2,600.00-3,000.00

1 Ton

Sample price:US$20.00/kg.Request sample

Product profile

Customization

Available

Condition

Used

Certification

ISO9001, ISO, Omri

Model NO.

Pure seaweed extract

Application

Vegetables, Flowers, Fruit, Crops

State

Powder

Validity

Long-term

Physics State

Solid

Infection On Soil

Physiological Alkaline

Chemical Character

Chemical Alkaline

Raw Material

Manure

Type

Green Manure

Alginic Acid

15%

Fe

3000ppm

K2o

18%

Pgr

500ppm

Organic Matter

50%

N

Transport Package

Bags

Specification

20kg/bag 10KG/BAG 1kg/bag 500gram/bag

Trademark

Alga 21st

Origin

China

Key features

Direct Factory Pricing: Best price due to own algae resources and harvest ships, controlling cost from the start.

High Alginic Acid Content: Contains 15% Alginic Acid, 50% Organic Matter, and 18% K2O for significant yield improvement.

100% Water Soluble: Black or brown powder/flake form, fully soluble in water with pH 8-10.

Dual Application Methods: Suitable for Foliar Spray (1-5kg/ha) and Irrigation (5-15kg/ha) for vegetables and crops.

Certified Quality: ISO9001, ISO, and Omri certified, ensuring high standards for agricultural use.

OEM/ODM Support: OEM and ODM services available with 41 R&D engineers for customized solutions.

Company profile

Qingdao Seawin Biotech Group Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2004-06-01 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, Western Union

AI-Powered supplier vetting

SummaryQingdao Seawin Biotech Group Co., Ltd. is a China-based limited company founded in 2000, with 556 employees and operations in Shandong. It is identified as a manufacturer and processor focused on seaweed fertilizers, organic fertilizers, NPK fertilizers, fertilizer equipment, and related products. The supplier reports more than 10 production lines, a 260,000 m² manufacturing plant, annual seaweed extract and finished-product output of 600,000 tons, and export markets in South America, Europe, and North America. Its agronomist team provides fertilizer solutions and crop-protection advice, while reported certifications include ISO 9001, ISO 14001, ISO 45001, and ECOCERT organic-input certification. The available data supports strong production capability, certification coverage, and technical support. However, evidence is insufficient to confirm customization capability, financial credibility, or established customer cases; the trade records provided show only one transaction per listed buyer.

Supplier typeThe supplier is a limited company founded in 2000 and is explicitly described as a professional manufacturer focused on the exploitation, development, production, and marketing of marine biological products. Its product keywords and manufacturing descriptions identify it as a producer of seaweed fertilizer, organic fertilizer, NPK fertilizer, and fertilizer equipment rather than solely a trading company.

CertificationsThe supplier reports ISO9001:2015, ISO14001:2015, and ISO45001:2016 management-system certificates. Its SEAWINNER organic fertilizers are also stated to be certified by ECOCERT as organic agricultural inputs under both EU and NOP standards, providing explicit evidence of multiple quality, environmental, occupational-safety, and product certifications.

R&D capabilityThe supplier reports 41 years of total R&D-engineer experience and describes development and industrial utilization of marine biological resources. Its agronomist team provides professional fertilizer solutions and crop-protection advice, indicating technical development capability, although the slices do not provide specific R&D projects, patents, laboratories, or newly developed products.

Production capacityProduction capability is strongly supported by 556 employees, more than 10 production lines, a reported 260,000 m² manufacturing plant, two Shandong production bases, and stated annual output of 600,000 tons of seaweed extract and finished products. The supplier also reports lead times of within 15 workdays in off-peak periods and one month during peak periods, further indicating organized manufacturing capacity.