Do you offer OEM and ODM services?

Yes, we provide both OEM and ODM services with support from our 41 R&D engineers.

What are the payment terms?

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

What is the lead time for orders?

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

Seaweed Macro Element Water Soluble Fertilizer-NPK

Name: Seaweed Macro Element Water Soluble Fertilizer-NPK
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 787623535

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

Negotiable

20 Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO9001, ISO, CE

Application

Vegetables, Flowers, Fruit

Model NO.

21-12-21

Appearance

Powder

Infection on Soil

Physiological Neutral

Chemical Character

Chemical Neutral

Release Type

Quick

Manufacturing Method

Compound Fertilizer

Type

High NPK Water Soluble Fertilizer

Solubility

100% Soluble

Transport Package

10kg, 20kg, 25kg, OEM

Specification

21-12-21

Trademark

Seawinner

Origin

China

Production Capacity

6000mt/Month

Key features

Comprehensive NPK Formula: Available in 21-12-21, 16-6-32, and 18-18-18 ratios for balanced nutrition.

Soil Protection: Neutral formula prevents soil acidification and salinization effectively.

High Absorption Rate: Chelated nutrients are easily absorbed by roots, increasing utilization rate.

Cold and Waterlogging Resistance: Enhances plant resistance to environmental stress like cold and waterlogging.

100% Solubility: Light green powder with 100% solubility for quick release and fertigation.

OEM and ODM Services: Custom manufacturing services available with 41 R&D engineers.

ISO Certified Quality: Manufactured under ISO9001, ISO, and CE certification standards.

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.