“…Extension could study sustainability for other issues. For example, extending Mou, et al (2018) and others to study the sustainability for enterprise supply chains, extend Li, et al (2018) and others to study the sustainability of portfolio selection, extend Tsendsuren, et al (2018) and others to study the sustainability of life insurance, extend to study the sustainability of warrant markets, extend Liao and Wong (2008), Liao, et al (2012, Moslehpour, et al (2018) to study the sustainability of e-shopping, extend Pham, et al (2018) to study the sustainability of outsourcing business, and extend Moslehpour, Wong, Aulia, and Pham (2017) and Moslehpour, Wong, Lin, and Huyen (2017) to study the sustainability of marketing.…”