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Type of water bed
There are two main types – hard-edged water beds and more modern soft-sand sofa waterbeds. The hard-edged waterbed is the first waterbed to come out. The bed frame is the main support for mattresses made of vinyl and is part of the bedroom furniture. Bed frames are made of natural wood (suc... -
What is a water bed?
The waterbed can completely conform to the body curve. In any case, changing the sleeping position can evenly support the whole body weight, so that the cervical vertebrae and lumbar vertebrae are no longer suspended, reducing the pressure of the body’s own weight on the spine, muscles, mic... -
The physical principle of the Oxygen concentrator
Using the adsorption performance of the molecular sieve, through the physical principle, the large-displacement oil-free compressor is used as the power to separate the nitrogen and oxygen in the air, and finally obtain a high concentration of oxygen.This type of oxygen generator produces rapid o...
