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1. Preparation  rapid self test Wash your hands with running water or hand sanitizer. After cleaning your hands, unpack the antigen test card and place it in a flat and clean place. Learn about the testing process. Carefully read the supporting instructions of the antigen self-test reagent and related precautions for antigen self-test, check whether the antigen self-test reagent is within the shelf life, and check whether the contents of the nasal swab, sampling tube, test card, etc. are missing or damaged. 2. Sample collection Carefully unpack the nasal swab and avoid touching the swab head with your hands. Then tilt your head slightly, hold the tail of the swab in one hand and stick it into one nostril, slowly go back along the bottom of the lower nasal passage for 1-1.5 cm, then stick it to the nasal cavity and rotate it at least 4 times (stay for no less than 15 seconds), then Repeat for the other nasal cavity using the same swab. It should be noted that the antigen d...

Now due to the epidemic of the new coronavirus, masks have played a great role. How do we choose  kn95 mask with adjustable ear loops   from regular manufacturers in our daily life? 1. Regular masks will mark the place of origin and the manufacturer. You can use Baidu Enterprise Credit to query the information of the mask manufacturer to see if it is a regular mask manufacturer. 2. Qualified medical masks will be marked with a production license number, and you can check whether the license number is true and valid on the national official website. 3. Different types of masks have different production standards, and different standards have different requirements for the quality of masks. You can check the specific requirements in the production standards of masks to judge whether they are qualified. 4. Regular masks will mark the production date and shelf life, and check whether the mask is still within the validity period. like： How to distingui...

1. Select specifications according to needs Computers can be roughly divided into categories such as document business, e-sports, and audio-visual drawing creation and design.  ubuntu mini pc The required computer specifications are not the same, and the higher the specification, the higher the price. Therefore, the main purpose should be determined first. , and then look for models that match the specifications, so it is not difficult to find products that are satisfactory to use and meet the budget. 2. Pay attention to heat dissipation design In order to save space, some mini-computers use a fanless design with low-heat components. The advantage is that they can be completely silent during operation. However, without the help of active heat dissipation, it is extremely important whether the passive heat dissipation design can effectively dissipate heat. Common passive cooling methods include adding heat sinks, adopting a porous design in the chassis, and increasing the number o...

The material of the candle barrels. At the beginning, most of the candle barrels are made of iron. The iron  candle bucket  are easy to clean and match with many decorative styles, but one thing is that the color is relatively single. At present, there are candle holders on the market that are made of glass. This material has a richer style and is easy to clean, but it is easy to break, which is the characteristic of glass. There is also a wooden candlestick, it is not easy to break, but the color is relatively simple, choose according to your own preferences. like： What is the effect of using candle barrels How to maintain the galvanized iron candle barrel? Application advantages of iron candle barrels 

Disposable electronic cigarettes have been very popular for a period of time.  ​disposable electronic vape  . Of course, disposable electronic cigarettes are still popular, but many users do not know how to use disposable electronic cigarettes to see if they have finished smoking? First of all, if there is no smoke, it is likely to be finished. After all, the capacity of disposable e-cigarette e-liquid is so much. After smoking, there will be no e-liquid, and if there is no e-liquid, there will be no more cigarettes. If you are not reconciled, you can scrape the outer layer of the disposable electronic cigarette, so that you can see the e-juice. If there is no e-juice, it is finished, and it can almost be thrown away. like： ​What should I do if the electronic cigarette has a sticky smell? ​How to solve the oil leakage of electronic cigarette with a sticky smell  ​What to consider when proxying disposable e-cigarettes

From the early days, traditional neon lights were used in the production of door signs and store signs in some clubs, and they were gradually replaced by LED neon lights along the way. How to choose  led neon light tube ? 1. Look at the solder joints The light strips produced by regular LED neon light strip manufacturers are produced by SMT patch process, solder paste and reflow soldering process. Therefore, the solder joints on the light strip are relatively smooth and the amount of solder is not much, and the solder joints extend from the FPC pad to the neon light electrode in an arc shape. 2. Look at the cleanliness of the neon surface The light strip produced by the SMT process has a very good surface cleanliness, and no impurities and stains can be seen. 3. Look at the label Regular LED neon belt bags and reels will have printed labels instead of printed labels. The label of the copycat version is printed, and the specifications and parameters are not uniform. like： What are t...

With the continuous expansion of shoe market demand, more and more brands are born, but many of these brand owners do not have their own factories, so where do these products come from? In fact, it is to find experienced leather shoes OEM OEM manufacturers to process. So how do you find a good   men shoe manufacturer ? 1. Does the manufacturer really exist and have the necessary conditions for production? First of all, we must understand the authenticity of the manufacturer, whether it really exists, and whether it really has the necessary conditions for production. This requires us to visit the manufacturer in person. 2. Are the relevant documents complete? If a leather shoe manufacturer without a business license cannot produce footwear, before looking for a leather shoe OEM manufacturer to process shoes, it is necessary to know in advance whether the manufacturer has this new certificate. 3. Inspect whether the leather shoe OEM manufacturer has a design team and a productio...