Polycrystalline sillicon (also called: polysilicon, poly crystal, poly-Si or also: multi-Si, mc-Si) are manufactured from cast square ingots, produced by cooling and solidifying molten silicon. The liquid silicon is poured into blocks which are cut into thin plates. The solidification of the material results into cells that contain many crystals, making the surface of the poly-Si/ mc-Si cell less perfect than its mono-Si counterpart. Due to these defects, polycrystalline cells absorb less solar energy, produce consequently less electricity and are thus less efficient than monocrystalline silicon (mono-Si) cells. Due to their slightly lower efficiency, poly-Si/ mc-Si cells are conventionally a bit larger, resulting in comparably larger PV modules, too. This factor has to be considered if space is limited. Nevertheless, the advantage of poly-Si/ mc-Si cells is that they are easier and thus cheaper to produce. Poly Solar Cell,Solar Photovoltaic Cell,Most Efficient Solar Cell,Polycrystalline Solar Cells Wuxi Sunket New Energy Technology Co.,Ltd , https://www.sunketsolar.com
Winter has brought a pleasant surprise to the northern part of the country, where the weather has been unusually mild and air quality has significantly improved—especially in Beijing. With no smog lingering in the air, blue skies and white clouds have become the norm. In fact, Beijing recorded an impressive 71% excellent air quality in December, with an 89% rate of good air days. As a result, many small business partners have quietly put their air purifiers aside, wondering if they're really necessary anymore.
However, even in the absence of smog, indoor air quality can still be a concern. With people using air conditioning and keeping windows closed during cold weather, harmful pollutants such as formaldehyde, dust, bacteria, and volatile organic compounds (VOCs) can accumulate indoors over time. These substances can negatively affect health, making it essential to have an effective air purifier that can remove a wide range of contaminants.
This is especially true for homes where recent renovations or new furniture have been introduced, or where there are elderly individuals, children, or those with weakened immune systems. People who smoke indoors, cook frequently, or have pets and plants may also find themselves exposed to more airborne irritants. For these situations, an air purifier remains a valuable tool in maintaining a healthy living environment.
Let’s take a look at some top-rated models on the market:
**Philips AC6608 Air Purifier**
The Philips AC6608 features VitaShield IPS technology with a dual nano-level filter that can capture particles as small as 0.02 microns. It effectively removes PM2.5, formaldehyde, and common allergens. The AeraSense smart sensor provides real-time monitoring of indoor air quality, making it ideal for large spaces like living rooms or classrooms. With a CADR of 710m³/h and noise levels between 34dB and 65dB, this model is both powerful and quiet.
**Honeywell KJ550F-PAC2156W Air Purifier**
This model uses a PolyTech multi-effect composite filter that offers efficient and eco-friendly filtration. It includes smart control features and a silent design, allowing users to monitor and manage air quality remotely via an app. With a CADR of 700m³/h and a 360° air intake system, it's perfect for larger areas.
**352 X83C Air Purifier**
Designed specifically for newly renovated homes, the 352 X83C excels at removing formaldehyde and other VOCs. Its quadruple filter system ensures comprehensive purification, while the German ebm fan and butterfly circulation design boost efficiency. The app-enabled remote control makes it easy to manage from anywhere.
**Yadu KJ500G-S5 Air Purifier**
With a high CADR of 500m³/h, this model is great for large spaces. Its double 3-in-1 filter effectively captures both smog and formaldehyde. The twin-turbo design increases airflow while reducing noise, making it ideal for bedrooms or open-plan living areas.
**Panasonic F-73C6VJD-S Air Purifier**
This model stands out with its multiple indicators, including PM2.5, air pollution, and humidity levels. It also features a nanoe ion generator for additional purification. With smart home integration through the "Jingdong Weilian" app, you can monitor and control your air quality remotely, ensuring clean air whenever you return home.
Whether you're looking to improve indoor air quality or protect your family's health, these air purifiers offer advanced technology and user-friendly features. Check out the links below to learn more and make a purchase:
[Buy link: Philips AC6608](https://item.jd.com/16382875632.html)
[Buy link: Honeywell KJ550F-PAC2156W](https://item.jd.com/3664058.html)
[Buy link: 352 X83C](https://item.jd.com/4958298.html)
[Buy link: YADU KJ500G-S5](https://item.jd.com/3740498.html)
[Buy link: Panasonic F-73C6VJD-S](https://item.jd.com/3180263.html?jd_pop=166e4be7-442d-4e49-afd7-6f1e74ed62d7&abt=0)