Why is the national day and the Mid Autumn Festival on the same day in 2020?   Astronomical experts said that the Mid Autumn Festival is a normal calendar phenomenon. It was last seen on October 3, 2009 (leap may). The next “Reunion” of the Mid Autumn Festival and national day will be on October

According to foreign media slashgear, at the beginning of the epidemic, there were some disputes about the use of self-made and reusable face masks, and the public was worried about whether these common materials could properly slow down the spread of droplets in the air. Some studies have verified the effectiveness of these masks, but

1. The fabric itself does not produce hair dust: as it is worn in the clean room, it is required that the fabric can not be the source of hair dust in the clean room, which determines that the ultra clean fabric can only be produced by chemical synthetic long fiber. However, cotton, hemp, silk

From September 17 to 19, 2020, the 83rd PHARMCHINA will be held in Guangzhou. The exhibition products cover chemical drugs, Chinese patent medicines, Chinese herbal medicines, Chinese herbal pieces, OTC, biopharmaceuticals, nutrition and health products, household medical devices, medical consumables, diagnostic reagents, adult products, beauty care and daily chemical products, medical health services, pharmaceutical contract

Isolation Gowns, also known as clean work clothes, clean work clothes, clean clothes, dust-free clothes, sterile clothes, anti-static work clothes, dust-free work clothes, partition work clothes, protective clothing, etc. In addition to clothing itself can not become a source of dust, but also has the effect of preventing human body from emitting dust. At the

Since the outbreak of the epidemic this year, face masks have been with us for nearly a year. When working at home, always wear masks when going out. After returning to work and classroom study, we have to wear masks for up to 8 hours every day. However, wearing masks for a long time will

From the point of view of human physiological structure, because the blood circulation of nasal mucosa is very strong, and the passage in nasal cavity is very tortuous, the nasal hair constitutes a filtering “barrier”. When the air is inhaled into the nostrils, the airflow forms a vortex in the tortuous channel, which heats up

Disposable Protective Face Mask（C006,Non-sterile）： HYNAUT brand. Direct sales from the factory to ensure high quality. Direct contract signing to ensure safe transactions. CE / FDA / TGA and other qualifications are complete. Various product test reports are available. Points for attention: 1.Please use it within the validity period 2.One time use only，please discard it properly