“…First, it adds to the study on the determinants of export quality. For the internal factors that may affect export quality, previous studies have shown the effects of input quality, input variety, and productivity heterogeneity on export quality (Baldwin & Harrigan, 2011; Hallak & Sivadasan, 2013; Johnson, 2012; Kneller & Yu, 2016; Kugler & Verhoogen, 2012; Melitz, 2003; Verhoogen, 2008). For the external environment, the existing literature have documented that the income level of export destinations, trade liberalization, and other institutional reforms could play an important role in affecting export quality (Bas & Strauss‐Kahn, 2015; Bastos & Silva, 2010; Fan et al, 2018; Fieler et al, 2018; Hallak, 2006; Li et al, 2021; Li et al, 2022; Sutton, 2007).…”