I'm working on Chinese OFDI in Africa and I really want to analyze my hypothesis via an Econometric Model based on the Micro level index. So if you already have a room or article link please let me know to learn how is possible.
The econometric model you seem to be seeking is how to analize the effect of China's OFDI on the African economy. A good apriori specification is to treat it as a driver of the economic growth of Africa. In such case, you want some measure of output to be regressed on OFDI and other independent variables. There is no standard specification for this. So you will have to experiment with different specifications to get one that is significant for your area.
What is standard is the theory that any investment, foreign and/or domestic has a multiplier effect on output in the Keynesian sense. The most popular specification is of the Cobb-Douglas type. But you may need to study a system of equation model, such as the simple ones developed by Nobel laureate economists, Laurence Klein, Jan Tinbergen, or Franco Modigliani. I do not mean to leave out the monetarists such Freedman, Lucas etc., who have given us pioneering model as well.
Definitely, it is possible to econometrics models for micro-level data/topics. However, the modeling and analysis will depend on the nature of the data and so on.
You may request and read this article - Sizhong Sun, Sajid Anwar, "R&D activities and FDI in China’s iron ore mining industry". The empirical analysis presented in this paper is based on firm level data obtained from the enterprise survey.