Does the manufacturer offer OEM or ODM services?

Yes, the company provides both OEM and ODM services for customized needs.

What are the payment terms?

Payment terms include LC, T/T, and Western Union.

Blan N-4 Slow Release Nitrogen Plus Seaweed

Name: Blan N-4 Slow Release Nitrogen Plus Seaweed
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 792856372

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

Negotiable

2,000 L

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO9001, ISO, CE

Application

Vegetables, Flowers, Fruit, Cereal Crops, Rice, Barley, Wheat

Model NO.

Blan N

Appearance

Liquid

Infection on Soil

Physiological Neutral

Chemical Character

Chemical Neutral

Release Type

Slow

Solubility

100% Soluble

Transport Package

1L, 4L, 5L, 10L, 20L

Specification

Gold Energy

Trademark

Seawinner

Origin

China

Production Capacity

8000L/Month

Key features

100% Soluble Formula: Ensures complete dissolution for efficient foliar spray and irrigation application.

Rich in Trace Elements: Contains Zn, Fe, Cu, and B to support comprehensive crop nutrition and growth.

Seaweed Extract Base: Dark green liquid composed of seaweed extract compound for better leaf retention.

Versatile Crop Application: Suitable for vegetables, flowers, fruits, cereals, rice, barley, and wheat.

Compatible with Pesticides: Can be mixed with most NPK, TE fertilizers, and pesticides after compatibility test.

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

OEM/ODM Support: Customization services including OEM and ODM are available for bulk orders.

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.