Foreign MNEs in Myanmar

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Hi , I am a first-year doctoral researcher from London and currently working on research in foreign MNEs operation in Myanmar. I have been struggling to find the information in this area such as how many total foreign MNEs by sectors, countries and ownership etc.
Anyone knows how and where I can get that information and how can I get to the entry point for my research data in those companies? Any suggestions are welcome!.
Thanks.

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