“…In order to test whether OFDI reverse technology spillover will promote the export technological complexity, the method of Brach and Kappel (2009) 4 is referred and the following econometric model is built: ln = + 0 ln + 1 ln + 2 ln + 3 ln + 4 ln + (1) Wherein, t is time (year), i represents provinces, ETC is export technological complexity, SP is the technological spillover obtained by OFDI, IS is industrial structure, BI is the basic infrastructure, HC is the human capital, RD is R&D investment, and ε it is the random error.…”