What are the benefits of controlled-release fertilizer?

It precisely controls nutrient release, reduces overall fertilizer input, saves labor, and increases yields.

Where is the manufacturer located?

Qingdao Haidelong is located in Qingdao, China, with a plant area of 600 square meters.

Wholesale Granular NPK Fertilizer for Agricultural Use with ISO Certificate

Name: Wholesale Granular NPK Fertilizer for Agricultural Use with ISO Certificate
Brand: Qingdao Haidelong Biotechnology Co., Ltd.
SKU: 2130620645

Shandong, ChinaQingdao Haidelong Biotechnology Co., Ltd.

US$540.00

5-24 Tons

US$535.00

25-49 Tons

US$528.00

50+ Tons

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

CAS No.

None

Formula

None

Model NO.

HDL-NPK-C

EINECS

None

Certification

ISO9001

Application

Vegetables, Flowers, Fruit

Appearance

Granular

Infection on Soil

Physiological Acid

Chemical Character

Chemical Acid

Release Type

Slow

Manufacturing Method

Mixed Compound Fertilizer

Type

General Compound Fertilizer

Condition

New

Certification

ISO9001

Application

Vegetables

State

Granular

Validity

Long-Term

Physics State

Solid

Chemical Character

Chemical Neutral

Type

Chemical

Certificate

ISO

Apprance

Colour Granular

Release Type

Controlled Release

Transport Package

25kg 1000kg

Specification

CUSTOM

Trademark

CUSTOM

Origin

China

Key features

ISO & OMRI Certified: Passed ISO 9001 and OMRI certification for quality assurance.

Custom Formula & Packing: OEM and ODM services available for custom formula and packaging.

Controlled Release Technology: Precisely controls nutrient release to reduce input and increase yields.

Wide Crop Application: Suitable for rice, corn, sugar cane, vegetables, and other crops.

Professional Manufacturer: Established in 2008 with 5 R&D engineers and advanced production lines.

Fast Lead Time: Average lead time within 15 workdays for both peak and off seasons.

Flexible Payment Terms: Supports LC, T/T, D/P, PayPal, Western Union, and small payments.

Global Export Experience: Exported to Asia, South America, Middle East, and other regions.

Company profile

Qingdao Haidelong Biotechnology Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2020-09-17 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤6.14h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryQingdao Haidelong Biotechnology Co., Ltd. is identified as a China-based manufacturer established in 2008, with 102 employees, five production lines, a 600 m² manufacturing plant, and products focused on organic and environmentally friendly fertilizers. The supplier reports an R&D team, professional production and sales teams, five R&D engineers, and six to ten quality-control staff. It offers customized services and states that crop applications have improved soil, crop quality, and yield, but no specific customer names or independently verifiable case details are provided. Export activity is supported by self-operated import/export rights, stated export markets, Qingdao Port access, and delivery within 15 working days in both peak and off-peak periods. Certification information and sufficient evidence for financial credibility are not provided. The business profile contains some inconsistent classifications, with one slice describing it as a trading company and another identifying it as a manufacturer.

Supplier typeThe supplier is explicitly identified as a manufacturer and describes itself as engaged in R&D, production, import, and export of fertilizers. However, an associated-company record classifies the company nature as a trading company, creating a classification inconsistency that should be verified.

R&D capabilityThe supplier states that it has an R&D team and develops organic and environmentally friendly new fertilizers, while its product range includes seaweed extract, microbial fertilizer, chelate trace fertilizer, and amino acid products. This supports an identifiable R&D orientation, although no patents, laboratory credentials, or measurable innovation outcomes are provided.

Production capacityThe supplier reports a professional production line, five production lines overall, 102 employees, a 600 m² manufacturing plant, and six to ten quality-control staff. It also states that normal- and peak-season order fulfillment is within 15 working days, providing explicit evidence of operating production capacity and delivery capability.

Customization capabilityThe supplier explicitly states that it can provide customized services according to customer needs. No details are given on customization scope, technical feasibility, minimum order requirements, or implementation process, but the stated capability directly supports this field.