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  • Water treatment

    Water treatment

    There are three methods of water treatment: physical treatment, chemical treatment, and biological water treatment. The way humans have treated water has been around for many years. Physical methods include: filter materials adsorb or block impurities in the water, preci...
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  • The difference between :UVA UVB UVC UVD

    The difference between :UVA UVB UVC UVD

    Sunlight is an electromagnetic wave, divided into visible light and invisible light. Visible light refers to what the naked eye can see, such as the seven-color rainbow light of red, orange, yellow, green, blue, indigo, and violet in sunlight; invisible light refers to w...
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  • The difference between hot cathode UV germicidal lamp and cold cathode UV germicidal lamp

    The difference between hot cathode UV germicidal lamp and cold cathode UV germicidal lamp

    The working principle of the hot cathode ultraviolet germicidal lamp: by electrically heating the electron powder on the electrode, the electrons bombard the mercury atoms inside the lamp tube, and then generate mercury vapor. When mercury vapor transitions from a low-en...
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  • CONVERSION  of International Units of Measurement of Length

    CONVERSION of International Units of Measurement of Length

    The unit of length is the basic unit used by people to measure the length of objects in space. Different countries have different units of length. There are many types of length unit conversion methods in the world, including traditional Chinese length units, internation...
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  • Have you chosen the right stainless steel?

    Have you chosen the right stainless steel?

    In life, we use stainless steel everywhere, from bridges, trains, and houses to small drinking cups, pens, etc. There are many materials of stainless steel, and you should choose the right stainless steel according to the actual use. This article will discuss in detail h...
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  • If the customer does not reply,what you should do?

    If the customer does not reply,what you should do?

    Now we have entered a new era of e-commerce, and online foreign trade has become the mainstream. Sales channels are expanded through e-commerce platforms to acquire more new overseas customers. However, while the online model brings convenience, it also has disadvantages...
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  • Comparison of 5 commonly used oil fume purifiers

    Comparison of 5 commonly used oil fume purifiers

    As the saying goes, "Food is the most important thing for the people." Chinese cooking is not only technically exquisite, but also pays attention to the harmony and unity of color, aroma, taste, shape and beauty of food. There are 42 traditional Chinese cooking technique...
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  • Discussion on UV Wafer Light Erasing

    Discussion on UV Wafer Light Erasing

    The wafer is made of pure silicon (Si). Generally divided into 6-inch, 8-inch, and 12-inch specifications, the wafer is produced based on this wafer. Silicon wafers prepared from high-purity semiconductors through processes such as crystal pulling and slicing are called ...
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  • After the “heavy snow” in the lunar calendar, you can eat “three whites” to stay healthy

    After the “heavy snow” in the lunar calendar, you can eat “three whites” to stay healthy

    December 7, 2023, the 24th day of October in the lunar calendar (lunar calendar), is the "heavy snow" in traditional Chinese solar terms. "Heavy Snow" is the 21st of the 24 solar terms in the lunar calendar and the third solar term in winter, marking the official start o...
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  • The past and present life of ultraviolet germicidal lamps

    The past and present life of ultraviolet germicidal lamps

    Since the WHO officially declared COVID-19 a global "pandemic" on March 11, 2020, countries around the world have unanimously regarded disinfection as the first line of defense to prevent the spread of the epidemic. More and more scientific research institutions have bec...
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  • Catalog of pathogenic microorganisms transmitted to humans

    Catalog of pathogenic microorganisms transmitted to humans

    Note: This article is reproduced from the “List of Human-Infectious Pathogenic Microorganisms” organized by the Ministry of Health of the People’s Republic of China, a national integrated online government service platform. The following is an excerpt from the main text. At the ...
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  • National Standard for Testing Methods of New Chinese Drinking Water Standards

    Part 10: Disinfection by-product indicators have been implemented The national standard “Standard Test Methods for Drinking Water – Part 10: Indicators of Disinfection Byproducts” is under the jurisdiction of 361 (National Health Commission), with the competent department being...
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