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. 2021 Jan 6;60:787–798. doi: 10.1016/j.jmsy.2020.12.021

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© 2021 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 1 — Basic steps of the five major AM techniques widely used in making the 3D printed products during the COVID-19 pandemic: (a) SLA: Stereolithography Apparatus, (b) MultiJet (or PolyJet) Printing, (c) SLS: Selective Laser Sintering, (d) MJF: Multi Jet Fusion, (e) FDM/FFF: Fused Deposition Modelling/Fused Filament Fabrication.