แซ่เฮ้ง เ. Fabricated hollow steel equipment use in the production of DIY spacer used with Metered-dose inhaler. Science Technology and Innovation Journal, [S. l.], v. 1, n. 6, p. 8–15, 2020. Disponível em: https://li01.tci-thaijo.org/index.php/stij/article/view/247552. Acesso em: 30 may. 2024.