On March 11, the Canton Fair Complex, which was holding several large-scale exhibitions, suddenly took temporary closure control measures. In response, on March 11, Haizhu District, Guangzhou City issued a notice saying that a person suspected of having a positive nucleic acid test for COVID-19 recently entered the Canton Fair Complex. In accordance with the relevant requirements for epidemic prevention and control, the Canton Fair Complex will take temporary closure and control measures. On the same day, the official WeChat account of the Guangzhou Beauty Expo issued an important notice, requiring exhibitors to go to the nearest location for nucleic acid sampling in an orderly manner. Subsequently, at noon on March 11, the Guangzhou Municipal Bureau of Commerce Guangzhou Joint Conference Office for the Reform and Development of the Convention and Exhibition Industry issued the "Emergency Notice on Suspension of Recent Exhibition Activities". All exhibitions within. Based on this, many major exhibitions in March, such as China International Expo and Guangzhou Custom Home Furnishing Exhibition, had to be postponed.
The exhibition is an important part of market economic activities, and an important bridge for many industries to display scientific and technological innovation achievements, exchange industry development, and deepen communication between manufacturers. However, this is the first time that the Guangzhou Beauty Expo has been temporarily interrupted and closed for control due to the admission of suspected cases. On the one hand, it shows that the exhibition party's audit of the audience needs to be further strengthened, and on the other hand, it also shows that large venues need to further improve the relevant technical standards in terms of public health and safety.
Once an event is held in a large venue, it must be an area with a high density of people. If the corresponding prevention and control measures are not taken in advance, it is easy to cause serious consequences. Judging from the outbreak of the fifth wave of the epidemic in Hong Kong, on the one hand, strict prevention and control measures such as wearing masks, maintaining social distance, washing hands frequently, and traveling with health codes are required. Uninterrupted sterilization and disinfection without harm. Due to the mutation of the new coronavirus, the globally popular Omicron strain is more prominent in the aspect of "human-to-human transmission". Many objects can easily spread the virus to the human body after carrying the virus, which greatly enhances the transmission power of the virus and also provides a good defense against the epidemic. Control adds more difficulty.
Therefore, large-scale venues need to strengthen sterilization and disinfection work when the event is held or during normal maintenance. This requires the application of advanced sterilization and disinfection technology, photo-negative ion technology, to ensure the public health safety of large venues through uninterrupted and all-round sterilization and disinfection without harm to the human body.
Due to the huge space in large venues, conventional ultraviolet sterilization and disinfection are limited, and it is difficult to achieve comprehensive disinfection. Therefore, in the sterilization and disinfection of large venues, the change of the dose should be comprehensively considered, and it cannot be simply applied in the usual way. Moreover, it is necessary to take into account the different situations with and without activity, and take different change plans.
Therefore, to achieve sterilization and disinfection of large venues, it is necessary to "sterilize and disinfect invisible" and not harm the human body; it must also be able to "go to the ground" and fully cover the surface of all objects in the space; and 24x7x365 sustainable sterilization and disinfection, Let the virus in the space have no respite.
According to the test of the Guangdong Provincial Microbiological Analysis and Testing Center, the photo-negative ion technology can kill 99.99% of the virus in 1 hour in a 30m³ space, and the surface virus inactivation rate can reach 99.14% in 2 hours. At the same time, the photo-negative ion technology works for 8 hours , the purification efficiency of PM2.5 particles in the air is as high as 99.79%! In addition, the photo-negative ion technology can purify formaldehyde, benzene, ammonia and other odors in the air. Photonegative ion technology has three functions: healthy light, air purification, sterilization and disinfection. Most importantly, in the process of sterilization and disinfection by photo-negative ion technology, there is no harm to the human body, and people can carry out normal work and life. It can be covered by air, as long as the air can reach the place, the negative ions can be covered, so as to achieve the coverage of the whole space and the whole object, and then complete the comprehensive sterilization and disinfection. Therefore, the application of photo-negative ion technology for sterilization and disinfection in large venues will have a very impressive effect.
The new crown pneumonia epidemic has greatly affected people's normal social life order, and human beings need to continuously strengthen and apply scientific and technological innovations to overcome the new crown pneumonia epidemic. Since the invention of the photo-negative ion technology, it has been applied in demonstration projects in different occasions such as high-speed railways, hospitals, schools, office buildings, elevators, restaurants, live broadcast rooms, shopping malls, etc., with remarkable results, once again demonstrating the strength of scientific and technological innovation and charm. Next, how to apply photo-negative ion technology, a scientific research achievement that benefits the country and the people, to more public spaces such as large venues to ensure public health safety is a major event worthy of our joint efforts.
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