In response to the recent novel coronavirus pneumonia epidemic, this will Bianji Bu write Benpian especially small masks knowledge, hope readers can learn the correct knowledge in this wave of the epidemic, and make the relevant protective measures.
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In the panel industry, since the product area is large, and the equipment for applying photoresist is mostly semi-open, it is often considered normal to have a nasal smell in the Huangguang District. This article introduces that when you want to enter these places, you can provide a thinking direction for the industry to test.
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After signing the Kyoto Agreement, the European Union promised to reduce carbon dioxide emissions by 20% by 2020. In order to achieve this goal, the power consumption of power products used in the European Union must be fully controlled.
ISO 16890 is the new filter testing and evaluation criteria, has been officially announced at the end of 2016, the European region after 18-month transition period to replace the EN 779, while the United States is also considering whether to abolish future ASHRAE 52.2 test standards ....
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Air filters are widely used in ventilation, air conditioning and industrial applications, different air quality requirements shall be different levels of filter paper commonly cited international norms, such as the US ASHRAE 52.1, ASHRAE 52.2, IEST-RP, European EN779 : 2012, EN1882: 2009 and so on, and description that describe the norm for Europe.
Over the past fifteen years ago to open the door cassette system (FOUP (Front Opening Unified Pod) / LPU (Load-port Unit)) has been adopted by a majority twelve inches semiconductor plant and has been proven to provide a free ( or very little) particle contamination of the environment, only its failure to provide free (or very little) Manufacturing environment for water, oxygen or gaseous molecules. However, after the wafer transfer box door is opened, the wafer is also very contaminated during the process of being transferred into the process chamber in the micro environment.
