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Can you provide stock services for large orders?

Yes, we offer specific stock services for long-term business with annual or monthly shipment schedules.

High Quality Stainless Steel Extension Springs for Chairs

Name: High Quality Stainless Steel Extension Springs for Chairs
Brand: Yueqing Dofo Spring Manufacturing Co., Ltd.
SKU: 2096054875

Zhejiang, ChinaYueqing Dofo Spring Manufacturing Co., Ltd.

US$0.10-0.50

10,000 Pieces

Sample price:US$180.00/piece.Request sample

Product profile

Customization

Available

Function

Buffer, Restoration

Material

Stainless Steel

Model NO.

DF2311001

Usage

Industrial, Furniture, Home Appliance

Load Type

Extension

Production Process

Cold Roll

Shape

Coil

Wire Range

From Min 0.1mm(0.004inch) to Max 12mm(0.48inch)

Anti-Rust

Yes, and Very Long Time

Quality Standard

GB, ISO9001

RoHS Comply

Yes

Application

Furniture, Chair, Desk

End Treatment

No Burs

Normal Carton Size

23X23X31/Cm

Packing Method

OPP Bags Inside, Carton Box Outside

Tolerance Control

GB Standard, Grade II or as Per Your Requirement

Aql Level

Aql 1.0

Certificate

Ts16949, RoHS, ISO9001

Coating Thickness

8~10 Micrometer

Winding Direction

Left or Right

Surface Treatment

Nickel, Chrome Plating, Powder Coating

Testing Method

Random Sample Inspection

Transport Package

OPP Bags and Blank Carton

Specification

customized springs for different chairs

Trademark

DOFO

Origin

Wenzhou, China

HS Code

73209090

Production Capacity

1, 000, 000/Month

Key features

RoHS Compliant Materials: All springs comply with RoHS standards, ensuring environmental safety and quality.

Custom Design Support: Engineers provide CAD/3D/2D design assistance and prototype development services.

Flexible Order Quantities: We support both small quantity and large run orders based on customer demand.

Sample Charge Refund: Custom sample charges are refunded upon placement of a formal order.

Fast Standard Delivery: Standard springs in our mold range can be delivered within 25 days.

Durable Stainless Steel: High-quality stainless steel material with anti-rust properties for long-term use.

Professional Quality Control: 100% inspection including visual and function checks by 8 QA/QC inspectors.

Multiple Coating Options: Available coatings include Nickel, Chrome, Powder Coating, and Zinc Plating.

Company profile

High Repeat Buyers ChoiceIn-stock Capacity100% Finished Products InspectionQuality Assurance

Yueqing Dofo Spring Manufacturing Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 26 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤2.90h

AI-Powered supplier vetting

SummaryThe supplier presents itself as a professional technical supplier with 3D design, R&D, ODM, and broad customization capabilities. It reports structured production, testing, packing, quality-control, traceability, corrective-action, and complaint-handling procedures, as well as valid contracts with associated subcontractors and inventory capability. Export experience is stated at 26 years, with self-operated import/export rights and 21%–30% of sales from exports. However, it has no overseas warehouse, showroom, agents, or branches, and reports no offline trade-show participation. Certification holdings are explicitly described in the company profile, but current validity is not independently established. Financial credibility cannot be assessed because the supplied financial fields contain zero values. Customer cases and named customer references are not provided.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and describes a mature structure covering management, design, production, testing, and packing. It also has valid manufacturing contracts with associated subcontractors and self-operated import/export rights, supporting classification as a manufacturing-oriented technical supplier.

CertificationsThe company description states that it obtained ISO9001, TS16949, ISO14001, OHSAS18001, and BV certification. The slice does not provide certificate numbers, validity dates, or verification records, so the assessment is based on the supplier’s stated holdings.

After-Sales capabilityThe supplier reports clear procedures and followed records for corrective and preventive actions and customer complaints, plus quality assurance and material traceability. However, it has no overseas agents or branches, overseas warehouse, or showroom, which limits local service infrastructure.

R&D capabilityThe supplier reports R&D capability, new products in the past year, 3D software design services, and ODM services. It does not have an available SDK and does not provide OEM services for popular brands, but those limitations do not negate the stated product-development capabilities.

Production capacityEvidence includes valid contracts with every associated subcontractor, inventory capability, one-month average lead times in both peak and off-seasons, 20 qualified service-capability suppliers, standardized finished-product inspection instructions, and established production and testing structures. The supplier also reports 26 years of export experience and self-operated import/export rights.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, together with 3D design and ODM services. This indicates broad design-to-production customization coverage.