What is the lead time for orders?

The average lead time is within 15 working days for both peak season and off-season.

What certifications does the company have?

Our company is certified with ISO9001:2015 and conducts 100% inspection (visual and function) on finished products.

What is the structure of this spring?

This is a gas-filled coil spring with a double cylinder structure, providing bidirectional damping force and suitable for all road conditions.

DN 0-1" lift rear spring for FCB

Name: DN 0-1" lift rear spring for FCB
Brand: Guangzhou Duonai Suspension Technology Co., Ltd.
SKU: 2280791245

Guangdong, ChinaGuangzhou Duonai Suspension Technology Co., Ltd.

US$147.00

1 Set

Product profile

Customization

Available

Part

Dampers

Position

Front

Type

Gas-Filled

Spring Type

Coil Spring

Spring Material

Steel

Structure

Double Cylinder

Damping Force Direction

Bidirectional

Suitable Road

All Road

Shocks Type

Oil/Gas

Transport Package

Buffer+Cardboard Box

Specification

950mm*315mm*253mm

Trademark

Origin

China

HS Code

8708801000

Production Capacity

30000/Year

Key features

1-Year Quality Warranty: Free replacement for quality issues; customer covers shipping and taxes.

Full Customization Support: Offers customization from samples, designs, and flexible minor adjustments.

ISO9001 Certified Manufacturer: Established in 2017 with ISO9001:2015 certification and 100% product inspection.

Bidirectional Damping: Gas-filled coil spring with double cylinder structure for bidirectional damping force.

Fast Lead Time: Consistent 15 working days lead time for both peak and off-season orders.

OEM/ODM Services: Professional manufacturer providing OEM and ODM services with 5 R&D engineers.

Steel Construction: Durable steel spring material designed for all road conditions.

Flexible Payment Options: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Guangzhou Duonai Suspension Technology Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤3.65h

AI-Powered supplier vetting

SummaryDN Technology demonstrates strong product development and customization capabilities, including 3D software design, ODM, OEM for popular brands, and multiple customization methods. Its manufacturing operations include two production lines, CNC and other processing equipment, batch quantity reconciliation, and documented finished-product inspection procedures. Service processes include documented complaint handling, corrective and preventive actions, and quality assurance. However, the supplier has no valid manufacturing-capacity contract with affiliated subcontractors, no outsourcing SOP, no overseas warehouse, overseas showroom, overseas agents or branches, and no offline trade-show participation. Financial information is inconsistent across the provided records and does not support a reliable assessment. The supplier reports export sales of 51%–70%, but no specific customer cases are provided.

Supplier typeThe supplier presents itself as a manufacturer and technology-oriented product provider, supported by its listed oil press, shock absorber testing machine, tightening machine, cutting machine, and CNC machining center. Its company description emphasizes in-house core-technology research, innovation, and products for racing teams and drivers.

After-Sales capabilityThe supplier has documented procedures and records for customer complaints and corrective and preventive actions, and accepts FOB, CIF, CFR, and EXW quotation terms. However, it has no overseas warehouse, showroom, overseas agent or branch, and reports service coverage in zero countries, limiting evidence of localized overseas support.

R&D capabilityThe supplier reports new products during the past year, 3D software design services, ODM capability, and a stated focus on core-technology research and innovation. It does not have an available SDK, but the other evidence explicitly supports active product-development capability.

Production capacityProduction capability is supported by two production lines, multiple listed manufacturing and testing machines, in-stock capacity, continuous batch quantity reconciliation, and uniformly followed finished-product inspection instructions. Risks include the absence of a valid manufacturing-capacity contract with affiliated subcontractors and no outsourcing SOP.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, along with 3D software design and ODM services. These records provide direct evidence of broad customization coverage.

Client casesThe supplier states that it provides OEM services for popular brands and that its products have gained recognition among an increasing number of racing teams and drivers. However, no named customers, projects, or independently verifiable case details are provided.

Product Q&A

Q:What is the warranty coverage?

We provide a 1-year replacement guarantee for quality issues. If covered, we send the part free of charge, but the customer is responsible for shipping charges and taxes. Crash damage, abuse, and normal wear are not covered.

Q:How do I claim a warranty?

Warranty claims must be handled through Guangzhou Duonai suspension technology co.,ltd. directly, not through your dealer. Please fill out the provided form, and we will reply via email within 1-3 business days.

Q:Is customization available?

Yes, we offer full customization options including customization from samples, designs, minor customization, and flexible customization. OEM and ODM services are also available.

Q:What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 1 piece.

Q:What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.