Angel Investor (FreedomPop, etc.); VC - Buy- & Sell-side; XR, Supply Chain Management, Greater China; Market-entry Consulting; Technical Due Diligence.
Send me your profile and I'll take a look.
It doesn't have to be, but most professional PEs and VCs will demand preference shares.
Non-residents can apply for a TIN (Taxpayer Identification Number) which, for many intents and purposes, can be used like a SS#.
Are you looking for manufacturing partners? If so, I could help you find said in parts of East Asia.