1. Background Introduction In the electronic product manufacturing industry, it is often necessary to test whether the chemical substances attached to the product generate toxic and polluting gas under high temperature environments and cert...
VOCs, volatile organic compounds, refer to chemical substances with melting points below room temperature and boiling points between 50 and 260°C. VOCs are extremely harmful to humans, and when the concentration of volatile organic compound...
1. Background Introduction Gas chromatography first came out in the 1950s. It is a new separation and analysis technology based on the differences in the physical and chemical properties of the components. Making use of the differences in th...
二、1. Background introduction IVD is the abbreviation of In Vitro Diagnostic products. It is a type of medical device. It refers to the detection of human samples (blood, body fluids, tissues, etc.) outside the human body to obtain clini...
Background Introduction Printing technology refers to the imprinting of different designs, patterns and characters on specific carriers and fabrics in a certain way. By difference in printing tools, it is divided into forme-based printing an...
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