We understand that most customers prefer products in stock, so we'll try to keep most products in stock. However, we can keep certain products in stock because they need time to be synthesized.

What documents you provide?

Usually, we provide Commerical Invoice, Packing List, Bill ofloading,Insurance,COA , and Origin certificate. If your markets have any special requirements, let us know.

How do you treat quality complaint?

First of all, our quality control will reduce the quality problem to nearly zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

Seaweed Organic Liquid Fertilizer with High NPK and Polysaccharide

Name: Seaweed Organic Liquid Fertilizer with High NPK and Polysaccharide
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 782789652

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

US$3.50

2,000 L

Product profile

Customization

Available

Condition

New

Certification

ISO9001, ISO

Model NO.

seawinner gel

Application

Vegetables, Flowers, Fruit

State

Liquid

Validity

Long-term

Physics State

Liquid

Infection On Soil

Physiological Neutral

Chemical Character

Chemical Neutral

Transport Package

Bottle and Carton

Specification

500ml, 1L, 4L, 5L, 10L

Trademark

Seawinner

Origin

Qingdao

HS Code

310590

Key features

High NPK Concentration: Contains 750 g/L total N+P2O5+K2O for potent plant nutrition.

Rich in Polysaccharides: Features 100 g/L seaweed polysaccharides for soil and crop health.

OEM/ODM Support: Custom manufacturing available to meet specific client requirements.

Versatile Application: Suitable for vegetables, flowers, and fruit via foliar spray or drip irrigation.

Quality Guarantee: Free replacement or refund for any quality issues caused by the manufacturer.

Certified Manufacturer: ISO9001 certified with over 20 years of production experience since 2000.

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.

Product Q&A

Q:How long is your delivery time?

It generally takes 5-10 days if the goods are in stock, or 15-20 days if the goods are not, depending on the quantity ordered.

Q:Do you provide samples? Does it cost extra to request one?

Yes, we could offer the sample for free by requests but are not responsible for the freight cost.

Q:What is your terms of the payment ?

If the payment is<=1000usd, 100='' please='' pay=''>=1000USD, please pay 30% T/T in advance, balance before shippment. If you have any other questions, please feel free to contact us.

Q:Can you support OEM /ODM?

Yes, we can make products as your request.

Q:How can I get some samples?

Please send us your address, we'll be happy to offer you samples.