What certifications does the product have?

The product is certified with ISO9001 and ISO standards, ensuring quality for international markets.

Where is the manufacturer located?

The factory is located in Qingdao National University Sci-Tech Park, Shandong, China, with a plant area of 260,000 square meters.

Seaweed Compound Granular NPK Fertilizers

Name: Seaweed Compound Granular NPK Fertilizers
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 2016736302

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

US$0.40-0.60

30,000 kg

Sample price:US$0.00/kg.Request sample

Product profile

Customization

Available

Condition

Used

Certification

ISO9001, ISO

Model NO.

Seaweed Compound Granular Fertilizers

Application

Vegetables, Flowers, Fruit

State

Granular

Validity

Quick Acting

Physics State

Solid

Infection On Soil

Physiological Neutral

Chemical Character

Chemical Neutral

Function

Stimulate Crop Growth, Promote Crops On Soil Nutrient Use

Type

Organic Granular Fertilizer

NPK

Organic

Transport Package

20kg/Bag 10kg/Bag 20kg/Bag

Specification

20kg/bag 10kg/bag 20KG/BAG

Trademark

SEAWINNER

Origin

China

Key features

Rich Seaweed Extract: Contains 10% seaweed extract, 300ppm polysaccharide, and 500ppm alginic acid for comprehensive nutrition.

Soil Conditioner: Adjusts soil pH, forms aggregate structure, and promotes microbial activity to improve micro-ecological environment.

High Nutrient Utilization: Organic active substances promote nutrient absorption and significantly improve fertilizer utilization rate.

Root Fortification: Stimulates crop growth and fortifies the root system to increase yield and quality of vegetables and fruits.

Organic & Neutral: Physiologically and chemically neutral organic granular fertilizer with 20% organic matter content.

OEM/ODM Support: Manufacturer offers OEM and ODM services with 41 R&D engineers and large-scale production lines.

Fast Acting Formula: Quick-acting granular NPK fertilizer designed for efficient base fertilizing and topdressing applications.

Certified Quality: ISO9001 certified manufacturer with established export history since 2004 to global markets.

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.

Product Q&A

Q:What are the main ingredients of this fertilizer?

It contains 15-5-10 or 12-6-12 NPK ratios, 20% organic matter, 10% seaweed extract, 300ppm seaweed polysaccharide, 500ppm alginic acid, 1% MgO, and 1% CaO.

Q:How should this fertilizer be applied?

For base fertilizer, apply 600-900kg/ha. For topdressing, apply 300-450kg/ha. It is suitable for vegetables, flowers, and fruits.

Q:What are the key benefits compared to urea?

It conditions soil structure, adjusts pH, promotes microbial activity, improves nutrient absorption, fortifies roots, and increases crop yield and quality.

Q:Is OEM or ODM service available?

Yes, the manufacturer provides both OEM and ODM services, supported by 41 R&D engineers and dedicated production lines.

Q:What are the payment terms and lead times?

Payment terms include LC, T/T, and Western Union. Lead time is within one month during peak season and within 15 workdays during off-season.