Sawasdee. I served as a consultant to a firm in Nakornchaisri, Nakhornpathom and was in residence for one year. Your sons are likely here on H-1B Visa? There is a push in USA for creating "entrepreneur visa". There are political discussions going on about this so your timing could be good. http://online.wsj.com/article/SB10001424052748704402404574525772299940870.html
You should contact Pennsylvania Community and Economic Development http://www.newpa.com/index.aspx Pennsylvania has a trade representative Sarath Kumar Menon in SE Asia (Singapore) representing Thailand. Please contact Larry Nelson lanelson@state.pa.us and he will direct you accordingly. They can match you to a US business or partner or help you establish your business in Pennsylvania. Good luck.
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