“…Since Hidalgo and Hausmann ( 2009 ), many other scholars have followed the framework in different areas (Balland et al, 2020 ), applying the concept to products – as in the original work (Hartmann et al, 2017 ; Zhu & Li, 2017 ) – to patents (Balland et al, 2019 ; Balland & Rigby, 2017 ; Petralia et al, 2017 ) and to industries (Chávez et al, 2017 ; Mealy et al, 2019 ). While the first studies using the concepts and methodology of EC were developed at the national level (Felipe et al, 2012 ; Hidalgo & Hausmann, 2009 ), EC research has more recently addressed smaller geographical units, such as regions (Chávez et al, 2017 ; Gao & Zhou, 2018 ), provinces (Reynolds et al, 2018 ) or cities (Balland et al, 2020 ; Balland & Rigby, 2017 ). These studies suggest that regions or provinces may specialize into different activities following the industrial and technological trajectories driven not only from their countries’ policies, but also by territorial specificities (e.g., the availability of raw materials or geographical characteristics).…”