Yes we do ship to South East Asia, Taiwan and Australia. Do email or WhatsApp us to share with us more details so that we could advice you the shipping fees.
For the H series, they are non surgical and does not have any BFE, whereas for the MB series, they are surgical masks which has a BFE and PFE of 99.7%.
Masks sold are not allowed to be returned due to hygiene reasons. For refund, it will depend on case-to-case basis with valid reasoning. Do email or WhatsApp us on this.