"After working for a while, my cervical vertebra is so uncomfortable!" Is this sentence often heard? At present, cervical spondylosis has become a "modern disease". For this reason, there are "cervical vertebra traction devices" on the market. The most common cervical spondylosis we used to go to m

The negative pressure isolate chamber, since 2003, With the emergence of pandemic infectious diseases such as atypical pneumonia, avian influenza, H1N1 influenza and so on, which seriously endanger human health, how to effectively prevent and control infectious diseases and eliminate cross-infection