Following on from last year, we published a Technical Review2020 summarizing the results of TPEC's R&D related to production engineering. Contains 28 original technologies and 6 related patents in the digital field, mainly in fields such as measurement, xR, CAE, and IoT. We hope that this booklet will help you understand and use TPEC technologies. If you are interested in any technology, please feel free to contact us.