In the global market, fan exports need to comply with national regulations and standards, and different regions have different requirements for fan safety, energy efficiency and environmental protection. As a professional fan manufacturer, Guangdong Chungfo Electronic Technology Co., Ltd. is committed to providing 24v dc cooling fan Wholesale, 12v centrifugal fan and mini cross flow fan in line with international standards, to ensure that customers successfully pass the market access requirements of various countries. This article will introduce the fan certification requirements of major exporting countries or regions to help companies and buyers better understand the industry norms.

1. European Union (EU) : CE and RoHS certification

CE certification (Conformite Europeenne)

CE certification is a prerequisite for fan products to enter the EU market, mainly involving safety, electromagnetic compatibility (EMC) and energy efficiency requirements. For wholesale customers of 24V DC cooling fans, it is necessary to ensure that the products comply with the Low Voltage Directive (LVD) and electromagnetic Compatibility Directive (EMC) to avoid electromagnetic interference affecting other equipment.

RoHS Certification (Restriction of Hazardous Substances Directive)

RoHS certification (Restriction of Hazardous Substances) requires that fan products must not contain lead, cadmium, mercury and other harmful substances, especially 12V centrifugal fans and small cross-flow fans are widely used in electronic equipment and industrial applications, and must meet environmental standards.

2. United States (USA) : UL and FCC certification

Underwriters Laboratories (UL)

UL certification is an American safety standard that mainly tests the electrical safety, heat resistance, and fire resistance of fans. In particular, high-power industrial fans, such as 12V centrifugal fans, need to comply with UL 507 standards to ensure that the fan will not cause fire or electrical failure during prolonged operation.

FCC Certification (Federal Communications Commission)

FCC certification is mainly for the electromagnetic compatibility of fans, especially the application of small cross-flow fans in smart homes and medical devices, which must comply with FCC Class B standards to ensure that fans will not interfere with other wireless devices.

3. China (CN) : CCC certification

China Compulsory Product Certificate (CCC) applies to some household and industrial electronic products, such as high-power cooling fans. Although CCC certification is not mandatory for small cross-flow fans or 12V centrifugal fans, obtaining this certification can improve recognition in the domestic market.

How to successfully pass the fan export certification?

1. Select suppliers that meet international standards - Guangdong Chungfo Electronic Technology Co., Ltd. strictly implements global certification standards and provides fan products that meet CE, UL, FCC, RoHS and other requirements.

2. Pre-product testing - Before applying for export certification, ensure that the product has passed the appropriate safety and EMC tests.

3. Pay attention to the updating of regulations in different countries - certification standards may be adjusted at any time, and it is recommended to work with professional bodies to ensure product compliance.

In the increasingly fierce competition in the global market, compliance certification has become an important guarantee for the export of fan products. Guangdong Chungfo Electronic Technology Co., Ltd. focuses on the production of high-quality fans, including 24V DC cooling fan wholesale, 12V centrifugal fan, small cross-flow fan and other products, to ensure compliance with national certification requirements, to help customers expand the international market.

If you have any questions about the export certification of fan products, please contact us, we will provide you with professional support!

In modern industry, electronic equipment and home appliances, the role of cooling fans can not be ignored. Today, we will take you to understand several common cooling fans and their wide application.

First of all, the dc cooling fan plays an important role in the current heat dissipation technology. Dc fans can not only operate efficiently at lower voltages, but also reduce power consumption and extend the service life of the equipment, especially suitable for applications with high energy efficiency requirements, such as computers, power supplies and medical instruments.

Secondly, 12v centrifugal fans are widely used in environments requiring high air volume and high pressure due to their unique design. 12v is especially suitable for automobiles, home appliances and mechanical and electrical equipment, which can ensure the stable operation of the system in high temperature environment and avoid failure caused by overheating.

In addition, tangential cross flow fan are widely used in air conditioning systems, kitchen appliances and coolers for their uniform airflow distribution and high static pressure characteristics. Because of its compact structure, low noise and stable wind speed, tangential cross-flow fans have been widely used in industrial and household appliances.

Whether it is DC cooling fan, 12v centrifugal fan or tangential cross flow fan, Chungfo Electronics products are adhering to the principle of high quality and high performance, and is committed to providing customers with the most suitable cooling solutions. Learn more about our cooling fan technology and application, please feel free to contact us! Chungfo Electronics, a professional cooling fan manufacturer, is committed to providing you with a comprehensive cooling solution.

In small household appliances such as refrigerators, freezers and printers, heat accumulation is often one of the key factors affecting performance and lifespan. A highly efficient and reliable DC blower can not only solve the heat dissipation problem, but also effectively reduce noise and energy consumption. For R&D personnel or purchasing decision-makers, mastering how to calculate the basic parameters of a blower is the first step in choosing a suitable model.

1.Why are DC blowers the first choice for heat dissipation of small household appliances?

Compared with AC fans, DC blowers have the advantages of small size, low energy consumption, fast response, and low noise, and are very suitable for:

(1). Air circulation in the refrigerator refrigeration area

(2). Heat dissipation of refrigerator refrigeration components

(3). Heat dissipation of thermal components inside printers

(4). Heat dissipation of electronic modules such as smart toilets and water dispensers

Small appliance manufacturers usually give priority to consulting dc blower supplier during the design stage to obtain model parameters suitable for different voltage and wind pressure requirements.

2.Calculate the key parameters of DC blower

Before determining the fan model, it is recommended to perform the following calculations:

(1). Air volume (CFM or m³/min)

The air volume reflects the amount of air flowing per unit time. Taking the printer as an example, the internal heat dissipation space is small but the airtightness is high, so a model with high air pressure and moderate air volume should be selected.

Simple estimation formula:

Air volume ≈ heat source power (W) × heat dissipation coefficient (usually 0.06 ~ 0.1)

Example: If the heat source power is 60W, an air volume of about 3.6 ~ 6 CFM is required.

(2). Static pressure (mmH₂O or Pa)

Especially in freezers and refrigerators, if it is necessary to penetrate partitions or filters, high static pressure blowers are more suitable. You can communicate with the wholesale 24v DC blower factory about the specific ventilation resistance value and match the appropriate fan.

(3). Input power calculation

Power = voltage × current. For example, a 12V blower with a current of 0.3A has a power of:

12 × 0.3 = 3.6W

This value helps to evaluate the overall system energy consumption and power compatibility.

(4). Noise level (dBA)

Household appliances have high requirements for quietness. It is recommended to choose a blower model with ≤30dBA. You can ask for a test report or measured value from the wholesale 12v blower manufacturer.

3、How to choose a reliable blower manufacturer?

(1). Do you have experience in the small appliance industry?

(2). Do you provide real test data and 3D drawings?

(3). Do you support proofing and fast delivery?

(4). Can you provide stable supply and support after-sales technical response?

Choosing a wholesale 12v blower fan manufacturer with R&D capabilities like our Chungfo Electronic Technology Co., Ltd. can not only ensure smooth technical docking, but also reduce problems during small-batch trial production and large-scale production. At the same time, most professional wholesale 24v dc blower fan factory will also provide voltage customization, wire customization and outlet direction optimization to facilitate customers' rapid integration.

For small household appliances with compact structures and diverse working environments such as refrigerators, freezers, and printers, the stability of the cooling system is crucial. Mastering the basic calculation methods of DC blower air volume, static pressure, power, etc. will help to make more accurate preliminary selection and testing.

If you are looking for a small blower solution for household appliances, please contact us. We have many years of experience in cooperation with Midea, as well as with large companies such as Chigo, Skyworth, Hitachi, LG, and Icon. We are not only a DC blower supplier, but also have rich customer service experience, and are committed to providing you with more stable, quieter, and more energy-efficient blower products.

Axial fan is a common heat dissipation device, widely used in industry, home appliances and other fields. However, noise issues often become an important consideration when users choose. So, is the noise of the axial fan big? The answer depends on a variety of factors, including design, material, speed, and environment.

Noise source analysis

The noise of axial fan mainly comes from the following aspects:

1. Airflow noise: Eddy currents and turbulence generated when the fan blades cut air can cause noise.

2. Mechanical noise: bearings, motors and other parts will produce mechanical vibration at high speed.

3. Installation environment: Loose installation or unstable support structure will aggravate operating noise.

Advantages of silent axial fans

For noise problems, there are already high-quality silent axial flow fans on the market. With optimized blade design, high-precision bearings and low-vibration motors, these fans significantly reduce noise during operation. In addition, the silent fan achieves a good balance between the air volume and the silent effect, making it an ideal choice for users who value a quiet environment.

How to choose the right axial fan?

If you are looking for a product with stable performance and low noise, the ac axial cooling fan is the choice not to be missed. This kind of fan is not only efficient and energy-saving, but also widely favored for its stable operating performance. As a professional ac axial fan supplier, Chungfo Electronics is committed to providing customers with low noise, high performance products to meet the needs of various applications.

When purchasing a fan, you are advised to select the most suitable model based on actual requirements, such as air volume, installation space, and noise control requirements. If you need to know more about the silent axial flow fan, please contact  Chungfo Electronics, we will provide you with quality solutions!

The noise problem of cooling fans has been the focus of many consumers, especially when used in electronic devices, noise often affects the use experience. Different types of fans will produce different forms of noise during operation, mainly from the interaction between fan blades and air, fan motor operation and other factors.

dc cross flow fans are relatively quiet in terms of noise, because they use DC motors, which have less friction and vibration during operation. However, in the design of the fan blade, if the design is not proper, there may be a large airflow noise. Because the 12v cross flow fan is suitable for small equipment, when operating at low voltage, it may produce large wind cutting sound due to high speed or poor air duct.

tangential cross flow fans reduce noise through the tangential arrangement of blades and an optimized motor system. By improving the structure of the fan, such as using low-noise bearings and optimizing the shape and Angle of the blades, the noise generation can be effectively reduced.

In order to effectively deal with these noise problems, it is essential to choose high-quality fans and their accessories. In addition, reasonable air duct design, reduction of mechanical friction during fan operation and the use of silencing materials can also reduce noise levels to a large extent.

When it comes to printer design, choosing the right cooling fan plays a vital role in maintaining stable operation and protecting core components. An efficient cooling solution not only helps to lower the device's internal temperature but also extends the lifespan of its key parts, reducing failure rates and maintenance costs. In modern office environments, printers are often required to work continuously for extended periods, making a stable cooling system essential for reliable performance.

Among various cooling options, the dc axial fan 12v has proven to be the preferred choice for many printer manufacturers. Its compact size allows for easy installation in limited spaces, while the DC-powered design ensures steady airflow even at low voltage, reducing energy consumption and operating with minimal noise — a perfect fit for quiet office settings.

Beyond product performance, selecting an experienced dc axial fan manufacturer is equally important. A reliable supplier will not only offer products that meet strict quality standards but also provide professional suggestions on selecting the right fan models for your equipment, helping ensure long-term stability and optimized cooling performance.

At Chungfo Electronics, we are committed to delivering high-quality 24V dc axial fans for printers and a variety of electronic devices. Our solutions help enhance equipment stability and extend product life. Feel free to reach out to us for more information on printer fan selection.

The cooling fan with gridlock feedback technology refers to a technology used to prevent the fan motor from gridlock (that is, the motor shaft is stuck or unable to rotate) during operation. It monitors the speed and current of the motor in real time to determine whether there is a lock-up, and when it detects a lock-up, it feeds back to the control system to start the protection mechanism or take measures such as automatic stop, reverse or reduce the speed, etc. to avoid fan or motor damage. Locked-rotor feedback technology in high speed exhaust fan.

In the application of high speed exhaust fan, locked-rotor feedback technology is particularly important. High rpm exhaust fans are often required to provide strong airflow at high speeds, especially in electronic devices and industrial environments that require rapid heat dissipation.

High CFM exhaust fan wholesale application scenario

In some application scenarios with high airflow requirements, high cfm exhaust fan Wholesale has become the first choice for users. The main feature of this type of fan is to provide a large air volume, suitable for equipment or industrial systems with large area heat dissipation requirements.

Mini exhaust fan price and technical support

Not only high-power, high-speed fans, but also such as mini exhaust fan prices are increasingly favored by the market. Although the power of these small fans is small, due to the complexity of their use environment, the problem of blocked rotation can not be ignored.

• High Compatibility: It is designed to be compatible with specific industrial systems, such as Siemens' ET200SP series, ensuring seamless integration and efficient operation within these setups.
• Robust Construction: It is likely made with high-quality materials and has a sturdy build, which can withstand the harsh environments often found in industrial settings. This includes resistance to vibrations, temperature variations, and dust.
• Precise Design: The terminal module has a well-thought-out design with clear markings and easy-to-use connections. This allows for quick and accurate installation and maintenance.

• Enhanced Performance: With its advanced design and high-quality components, it offers reliable and efficient performance. It can handle a wide range of electrical signals and ensure accurate transmission and processing.
• Increased Productivity: By providing stable and accurate operation, it helps to minimize downtime and improve overall productivity in industrial processes. This is crucial in industries where every minute of downtime can result in significant losses.
• Cost-Effective: Although it may have a higher initial cost compared to some other options, its durability and reliability can lead to long-term cost savings. It reduces the need for frequent replacements and maintenance, thereby lowering the total cost of ownership.
• Scalability: It can be easily integrated into scalable industrial systems, allowing for future expansion and upgrades. This flexibility makes it a suitable choice for businesses with growing needs.
• Brand Reputation: As a product from a well-known and trusted brand like Siemens, it comes with the assurance of quality and support. Customers can rely on the brand's expertise and after-sales service to ensure smooth operation and quick resolution of any issues.