Compared with foam aerosol medicine, finger pressure foam pump has several obvious advantages: first, it does not need to be filled with propellant, will not pollute the environment, has no risk of burning and explosion, does not require metal parts and printing filling materials are cheap, Reusable; second, most of the fluid in the finger pressure foam pump is water, which is volatile organic...
There are many types and styles of hand pumps on the market, and each type of pump is often accompanied by detailed instructions. But in terms of its structural design and technology, it can be roughly divided into the following six categories.
(1) The first category is the general working pump. When the pump is pressed by hand, the desired product is ejected with force. When the pump is...
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