Precautions for the use of masks

1. When used for oily particulate protection, the accumulative use time of class R does not exceed 8 hours at a time; the accumulative use time of class P does not exceed 40 hours, or the cumulative use time reaches 30 days from the start, whichever arrives earlier. 2. Protective masks cannot be was... read more

Animal diseases caused by coronavirus

Coronavirus mainly infects the upper respiratory tract and intestines of mammals and birds. There are currently seven known coronaviruses that can be transmitted to humans. Most colds in humans are caused by coronaviruses. The main symptoms of a cold caused by coronavirus include fever and swelling ... read more

Human coronavirus

There are currently seven known types of human coronaviruses. Among them, Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV), Middle East Respiratory Syndrome Coronavirus (MERS-CoV) and Severe Acute Respiratory Syndrome Coronavirus Type 2 (SARS-CoV-2) can cause fatalities Respiratory diseases.... read more

Basic knowledge of coronavirus subfamily

Coronavirus subfamily (scientific name: Orthocoronavirinae), commonly known as Coronavirus (English: Coronavirus), is a type of zoonotic single-stranded RNA virus that spreads between animals and humans. Coronavirus can infect mammals and birds, causing digestive tract diseases in cattle and pigs or... read more

N95 mask and FFP mask

In addition to all kinds of masks that meet Chinese standards, N95 masks often appear in the public eye, which is a mask that meets American standards. Medical protective masks in China are a type of N95 masks, but not all N95 masks are medical protective masks. There is also a FFP series of masks, ... read more