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Alga Phosphite K- Nutrition Plus Disease Control and K for Fruit Trees
US$2.00-4.00
2,000 L
Product profile
Customization
AvailableCondition
NewCertification
ISO9001, ISO, CEModel NO.
Alga Phosphite KApplication
Vegetables, Flowers, FruitState
LiquidValidity
Long-termPhysics State
LiquidInfection On Soil
Physiological AcidChemical Character
Chemical AcidRaw Material
SeaweedType
Seaweed Organic FertilizerHa
120Transport Package
1L 4L, 5L, 10LTrademark
SEAWINNEROrigin
QingdaoProduction Capacity
80000L/YearKey features
Seaweed & Potassium Synergy: Combines seaweed active ingredients with Potassium Phosphite for rapid P and K absorption.
Disease Resistance Enhancement: 3-valent Phosphite Anhydride acts as an internal fungicide against Downy/Powdery Mildew and Root Rot.
High Nutrient Utility Rate: Not easily fixed in soil, activating secondary and trace elements for better nutrition absorption.
Versatile Application Methods: Suitable for foliar spray, flood irrigation, or drip irrigation for fruit trees and vegetables.
Improved Fruit Quality: Promotes flower bud differentiation, fruit color change, and increases overall yield.
Safe for Young Growth: Safe for spring shoots and young fruits; promotes new shoot maturation without damage.
Good Chemical Compatibility: Compatible with copper preparations without precipitation or damage; prevents Canker effectively.
Certified Manufacturer: Produced by a factory with ISO9001, ISO, and CE certifications since 2000.
Company profile

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:What is the main composition of this product?
A:
It is a bright yellow clear liquid composed of rich seaweed active ingredients and Potassium Phosphite.
Q:How should this product be applied for fruit trees?
A:
For fruit trees, dilute by 1000-1200 times for foliar spray, or use 30-75L/Ha for flood/drip irrigation.
Q:What diseases does it help prevent?
A:
It enhances resistance to Downy Mildew, Powdery Mildew, Venturia Inaequalis, Phytophthora, Root Rot, and Canker.
Q:Can it be mixed with copper preparations?
A:
Yes, it has good compatibility and can be used with copper preparations without precipitation or damage.
Q:What should I do if crystals appear in the liquid?
A:
If crystals appear due to high concentration, simply add water to dissolve them; product effect remains unaffected.
Send Inquiry
*To:
Qingdao Seawin Biotech Group Co., Ltd.
Qingdao Seawin Biotech Group Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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