In the summer of 2026, the Northern Hemisphere was hit by the most widespread heatwave on record. From Texas in the United States to Rajasthan in India, and from the deserts of the Middle East to Xinjiang in China, surface temperatures of outdoor telecommunications cabinets frequently exceeded 75°C.

In sectors such as industry, telecommunications and outdoor electronic equipment, cooling fans are frequently exposed to high temperatures, high humidity or corrosive gases. Incorrect selection can, at best, shorten the service life of the equipment and, at worst, lead to downtime. This article provides clear selection criteria and practical advice for three specific types of environments.

With the rapid global adoption of electric vehicles (EVs), the demand for charging infrastructure is growing by the day. From domestic AC slow charging to DC fast charging on motorways, charging power is constantly increasing and charging speeds are becoming ever faster. However, whilst the industry strives to achieve ‘5 minutes’ charging for 200 kilometres of range’, a key yet often overlooked technical aspect is quietly playing a decisive role: the thermal management of chargers.

As a manufacturer of cooling fans, one of the questions we are most frequently asked in our day-to-day interactions with customers is: ‘Should I choose a DC fan or an AC fan?’ This question reflects the profound transformation currently taking place across the entire cooling industry. Today, I would like to share our understanding and observations of these two technologies from a manufacturer’s perspective.

When it comes to the requirement for quiet operation in DC cooling fans, hydraulic bearings (including FDB bearings) outperform ball bearings in terms of absolute silence, particularly during the initial stages of a product’s life. However, when considering the entire life cycle, ball bearings offer more consistent noise performance and are more advantageous in the long term.

As a manufacturer specialising in custom cooling fans, we have worked with numerous router manufacturers. A common issue we encounter is that, during the design phase of many mid-to-low-end routers, thermal management is often treated as an ‘insignificant’ consideration.
However, the reality is that thermal management is becoming a key bottleneck for router reliability.

If you’ve ever taken apart a gaming laptop, a high-power LED projector or a 3D printer, you’ve probably come across something that doesn’t look like a standard fan: rather than blowing air along an axial path, it draws air in and expels it from the side—this is a radial fan, also known as a centrifugal fan or blower. And the vast majority of high-performance radial fans are powered by 12V.

Many people new to 3D printing encounter a common problem: the printed models have rough surfaces, overhangs sag, and fine details become blurred. This is often not due to a lack of printer precision, but rather to inadequate cooling.

With the growing popularity of outdoor camping, emergency power supplies and home energy storage, energy storage units are becoming increasingly widespread. Many people have noticed that high-power energy storage units generate significant heat when powering devices.

In bustling shopping malls and at bus stops, digital signage displays often operate around the clock. Prolonged operation inevitably leads to heat buildup—high temperatures not only cause the screen to dim and slow down, but in severe cases can even burn out internal components. To ensure the stable operation of digital signage displays, cooling fans play an indispensable role.