Is OEM/ODM service available?

Yes, we provide both OEM and ODM services with 6 R&D engineers.

What is the noise level of the fan?

The noise level is 70 dBA, ensuring low noise operation.

400mm Ec Backward Centrifugal Fan with Customize Size and Material

Name: 400mm Ec Backward Centrifugal Fan with Customize Size and Material
Brand: NINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.
SKU: 2039220465

Zhejiang, ChinaNINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.

US$248.00-430.00

100 Pieces

Sample price:US$550.00/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Fan

Blade Material

Aluminum Alloy

Type

Centrifugal Fan

Electric Current Type

Mounting

Duct Fan

Certification

RoHS, CE, CCC

Transport Package

Standard Exporting Packages

Trademark

LONGWELL

Origin

China

Production Capacity

30000 PCS / Month

Key features

Customizable Size and Material: Offers full customization options including samples, designs, and flexible minor adjustments.

High Efficiency EC Motor: Utilizes BLEC motor with permanent magnet rotor for up to 1:10 speed control and low loss.

Low Noise and High Wind Speed: Operates at 70 dBA with high wind speed, ideal for air filtration systems.

Robust Protection Features: Includes locked-rotor, reverse polarity, over-voltage, and soft start protection.

Certifications: CE, RoHS and CCC on applicable models; ETL on selected models; we confirm the certificate for your exact model and market before order.

Compact and Efficient Design: Impeller directly mounted on motor rotor for synchronous operation without slip loss.

Flexible Control Input: Supports 0~10VDC and PWM control inputs for precise system integration.

Company profile

Cooperated with Fortune 500Self-brandedExhibition ExperienceManagement Certification

NINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.

Zhejiang, 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: 6 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤1.48h

AI-Powered supplier vetting

SummaryThe supplier is a China-based HVACR manufacturer offering OEM/ODM services, product customization, and stated 24/7 after-sales support. It reports annual production capacity for cross-flow, centrifugal, and axial fans, supported by cutting, laser-cutting, bending, rolling, and punching equipment. The supplier holds product, management-system, and social-responsibility certifications, and reports overseas service resources including an overseas warehouse, showroom, agents or branches, and participation in the Climate World trade show. Evidence of innovation is positive through recent new-product development and ODM services. Customer references are also favorable, including cooperation with Fortune 500 companies and an 80%–100% repeat-buyer preference. However, service-management procedures lack supporting records, and no approved supplier list is maintained. Financial information is insufficient to assess credibility because the slices provide only reporting years, not financial performance values.

Supplier typeThe supplier operates from Zhejiang, China, and its stated business scope covers manufacturing and processing of hardware tools, electronic components, plastic products, and mechanical and electrical equipment, along with technology R&D, design, and sales. Its company overview specifically positions it as an HVACR OEM/ODM solution provider.

CertificationsThe supplier reports FCC, CE, RoHS, and other product certifications, ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications, plus BSCI social-responsibility certification. These certifications provide explicit evidence of compliance and management-system coverage.

After-Sales capabilityThe supplier states that it provides 24/7 after-sales service and offers overseas debugging, maintenance, repair, training, and equipment installation in Russia. It also reports an overseas warehouse, showroom, agents or branches, and trade-show participation; however, the slices do not verify service performance outcomes.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and lists technology research and development, technical consulting, technology transfer, and design within its business scope. It does not provide an SDK, but that limitation is not sufficient to negate the broader evidence of product and technical R&D capability.

Production capacityReported annual productivity is 200,000 cross-flow fans, 300,000 centrifugal fans, and 200,000 axial fans. The supplier also lists cutting, laser-cutting, bending, rolling-and-bending, and punching equipment, supporting a demonstrated manufacturing base.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These services are reported both as an R&D/design capability and as a general design-services capability.

Client casesThe supplier reports providing OEM services for well-known brands and having cooperated with Fortune 500 companies. It also reports an 80%–100% repeat-buyer preference, although no customer names, project details, or independently verifiable case records are provided.

Product Q&A

Q:What customization options are available?

We offer full customization from samples, designs, minor adjustments, and flexible customization services.

Q:What is the minimum order quantity?

The minimum order quantity is 100 pieces.

Q:What certifications does the fan have?

CE, RoHS and CCC on applicable models; ETL on selected models. Tell us your destination market and we will confirm the certificate for the exact model before you order.

Q:What is the lead time for production?

Customized samples typically take 1-3 weeks, and first production batches 30-45 days after sample approval, depending on quantity and configuration.

Q:What payment terms are accepted?

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