Pharyngeal swab positive pressure nucleic acid sampling vehicle How many times can n95 masks be reused? In high-risk environments, the duration of use of n95 masks should not exceed 4 hours. If the mask is contaminated, deformed, damaged, or breathing hard, it needs to
The function of linear guides used on the machine tool is to play an effective role in guiding and supporting them. Such a role can be said to be very important in production. Not only can the efficiency of production be improved, the key is the quality of production. There is a great guarantee. I
The function of linear guides used on the machine tool is to play an effective role in guiding and supporting them. Such a role can be said to be very important in production. Not only can the efficiency of production be improved, the key is the quality of production. There is a great guarantee. I
As environmental pollution has become more and more serious, LED as a new generation of lighting technology has become the focus of attention in today's global society. With the LED's luminous efficiency and longevity, coupled with the advantages of energy saving, energy saving and environm
As environmental pollution has become more and more serious, LED as a new generation of lighting technology has become the focus of attention in today's global society. With the LED's luminous efficiency and longevity, coupled with the advantages of energy saving, energy saving and environm
Today's new vehicle builders like to grab time. It was absolutely unexpected that in the beginning of June, Wang Chien-yin, president of the company’s Greentown Group, was sold in a media interview. It was announced in such a short time! On June 22, 2018, in Jiujiang, a culturally fam