El trueque es el presente y el futuro del comercio internacional, especialmente para las personas que se inician en el negocio de importación y exportación. El trueque y más, operaciones triangulares.
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Filter method of vacuum cleaners
Dust bag filter
The dust cup is separated by the vacuum airflow of the motor to separate the garbage and gas at a high -speed vacuum flow, and then the filtering material such as HEPA is purified to avoid secondary pollution. The advantage is that you do n’t need to change the dust bag frequently; the disadvantage is that it should be cleaned after the vacuum is completed.
Filter 99.99%particles with a low size of 0.3 microns. The vacuum of vacuum will decrease with the use time of the dust bag, which will cause the suction to become less. Dust bags, so microorganisms such as mites will continue to breed in dust bags. When cleaning the dust bags, these mites will contaminate the surrounding environment. The dust bag is used as the characteristics of the filter, which is convenient to clean, and does not need to be cleaned every day. It is suitable for the car beauty cleaning industry of factory hotels. The disadvantage is that the filtration capacity of the dust bag has decreased. The pores of the fabric will be opened, the filtration capacity will be severely reduced, and it needs to be replaced.
Water filtration
Most of the dust and microorganisms are used as a filtering media. Most of them are dissolved in water when passing through. The remaining filter is further filtered after the filter, so that the tail gas when discharging the vacuum cleaner may be cleaner than the air during inhalation.