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Korona - huvittavaa - The face mask global value chain in the COVID-19 outbreak
20.02.2022 |
https://www.oecd.org/coronavirus/policy-responses/the-face-mask-global-…
Masks have a relatively sophisticated manufacturing process!!!!!!!!!!!! :-D
Surgical masks are basic products and are relatively cheap (when they are not in short supply).6 However, their production involves several types of inputs and the assembly of different parts in a relatively sophisticated process.7 The filtering property of masks is a function of a multi-layered structure made of non-woven fabric.
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Alue: Aihe vapaa