What are the payment terms?

We accept LC, T/T, and Western Union as terms of payment.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

Who is the manufacturer?

Qingdao Seawin Biotech Group Co., Ltd., which holds the No.1 market share in China for seaweed fertilizer.

Organic Seaweed Granular Fertilizer for Soil Improvement

Name: Organic Seaweed Granular Fertilizer for Soil Improvement
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 932281195

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

US$0.50

26,000 kg

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO9001, ISO, CE

Application

Vegetables, Flowers, Fruit

Model NO.

Soil improvement granule

Appearance

Granular

Infection on Soil

Physiological Neutral

Chemical Character

Chemical Neutral

Release Type

Quick

Color

Black Brown

Transport Package

25kg, 1000kg, OEM

Specification

Harvest granule

Trademark

Seawinner

Origin

China

Production Capacity

6000mt/Month

Key features

Soil Structure Improvement: Promotes effective microorganisms and improves water holding and aeration.

Long-Term Fertility: Supplies full nutrition and updates organic matter in soil for lasting effects.

Versatile Application: Suitable for vegetables, flowers, and fruit crops via root or furrow application.

Neutral Chemical Character: Physiological and chemical neutral, safe for diverse soil conditions.

Quick Release Type: Fast-acting granular formula ensures rapid nutrient availability to crops.

Free Sample Available: Free samples up to 500g available upon request for quality testing.

Customizable Color: Color can be customized to Black Brown according to specific requirements.

Manufacturer Direct: Direct from Qingdao Seawin Biotech Group with 100% market share in China.

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: ≤18h 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.