Padhil, A., Ahmad, A., Arman, M., Ramadhan Saputra Ramlan, M.D.R., Indratma, R. and Lestari, N.D. 2021. Re-designing Conventional Face Mask by Using Triz (Teoriya Resheniya Izobreatatelskikh Zadatch) Method. Journal of Management Science & Engineering Research. 4, 1 (Apr. 2021), 1–7. DOI:https://doi.org/10.30564/jmser.v4i1.2714.