Semir Sima 2017 summer new retro mix, summer is definitely the season of travel, every time this season, the circle of friends becomes a photography contest, those wonderful shapes have become a "humor joke" that makes you smile, want to super There is a fan? It must follow the trend. Please sit down and take a look at the train to the "retro"! Doodle ~ Doodle ~ Semir Senma 2017 summer new style retro Nothing seems to be more suitable for photographing than a single print Fresh dress long dress With metal texture glasses Feel free to play with a few lazy postures. You will absolutely like this forcing. The solid background looks very clean. This situation can come close to close-up More prominent people Of course, your clothing will be very clearly displayed to everyone Prev 1 2 Next Full Story
What material is a HEPA filter?
HEPA filter: HEPA (High Efficiency Particulate Air Filter) filter, namely high-efficiency air purifier, is a multi-layer purification technology that can filter more than 99.97% of dust particles with a particle size exceeding 0.3 μm. HEPA filters have the characteristics of good filtering effect, good sealing performance and long service life, and are widely used in semiconductor manufacturing factories, liquid crystal electronics factories, modular clean rooms and other occasions requiring ultra-high cleanliness.
HEPA filter media is a kind of synthetic fiber material, which is made of high-performance, high-strength fibers. At the same time, advanced production technology is used to ensure its highly deepened dust holding capacity and ideal low-resistance performance. HEPA filter media compared with other filter materials, high-efficiency filter cotton has higher filtration efficiency and better performance. High-efficiency filter media has its own special structure, which can not only effectively accommodate more dust, but also effectively improve the efficiency of filtration.
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