“…Drawing on recent literature (Chan et al, 2010;Gao, Wang, & Che, 2017;Kirkman, Lowe, & Gibson, 2017;Ma, Delios, & Lau, 2013a), we adopt a broad term ''subnation'' for intra-national regions, although different countries use different terms, e.g., provinces, states, prefectures, counties, boroughs, and towns. Most non-tariff measures (NTMs) occur between developed countries rather than between developed and developing countries (WTO, 2012, pp.…”