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Product profile
Customization
AvailableFunction
Pressed, BufferMaterial
SteelModel NO.
DF2012205Usage
Industrial, Auto, Motorcycle, Home ApplianceLoad Type
TorsionProduction Process
Cold RollShape
CoilProduct Name
Brake Caliper Return SpringBusiness Mode
Factory OEMMaterial Standard
GB 4357-09 or EquivalentWire Range
From Min 0.1mm(0.004inch) to Max 12mm(0.48inch)Winding Direction
Left and RightEnd Type
Customized Shapes AvailableSurface Treatment
Trivalent Zinc CoatingCoating Thickness
8~10 MicrometerTesting Method
Random Sample InspectionTolerance
GB Standard, Grade II or as Per Your RequirementSpring Rate Tolerance
+-3%~10%Aql Level
Aql 1.0Packing Method
OPP Bags with Blank CartonNormal Carton Size
23X23X31/Cm with No MarkCertificate
ISO9001, SGS, RoHS, CE, Ts16949Transport Package
Carton and Outer Wooden CaseSpecification
customizedTrademark
DOFOOrigin
Wenzhou, ChinaHS Code
7320909000Production Capacity
1, 000, 000 Pieces Per MonthKey features
Customizable Dimensions: Wire range from 0.1mm to 12mm with customized end shapes available.
RoHS Compliant Materials: High-grade steel options including stainless steel and carbon steel, all RoHS certified.
Professional Design Support: Engineers provide CAD, 3D, and 2D design assistance to optimize production costs.
Flexible Order Quantities: Supports both small quantity and large volume runs based on customer demand.
Sample Charge Refund: Custom sample charges are fully refunded upon placement of a formal order.
Multiple Coating Options: Various treatments like Trivalent Zinc, Nickel Plating, and Stainless Steel washing.
Wide Application Scope: Suitable for automotive, industrial, medical, and household appliance sectors.
Strict Quality Control: 100% visual and function inspection with ISO9001 and SGS certifications.
Company profile
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: ≤1.84h
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.
Product Q&A
Q:Which materials are available and do they meet RoHS certification?
A:
We offer High-Grade Spring Steel, Carbon steel, Stainless steel, and Music Wire, all complying with RoHS standards. Wire diameter ranges from 0.001 to 0.075 inches.
Q:Do you support small quantity orders or only large runs?
A:
We manufacture both large quantity and small quantity springs based on your specific demand, working with you to choose the most effective solution.
Q:Does DOFO spring offer design service or initial assistance?
A:
Our experienced engineers provide initial design assistance, cost reduction advice, and deliver CAD, 3D, and 2D design layouts along with prototype development.
Q:What is the typical lead time for custom springs?
A:
For springs within our mold range, delivery is within 25 days. For complex shapes, the delivery time is approximately 30 to 40 days.
Q:Do you charge for custom spring samples?
A:
Sample charges act as a subscription to the formal order and are refunded when the order is placed. Additional molds may incur extra charges.
Send Inquiry
*To:
Yueqing Dofo Spring Manufacturing Co., Ltd.
Yueqing Dofo Spring Manufacturing Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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