Why do I get the feeling that when a chinese person hears the word "small business" he or she is not applying the same mindset as a westerner?
Anyhow, enough of my philosophy lesson. Here is a "small" business from Beijing, China focusing on a variety of uses for the biochar they produce. Manufacturing as well as R&D is on their list of endeavours. They have had great success in using biochar as a purifier of heavy-metal polluted soils.
http://www.biowindbell.com/
PS. The blog is in a state of occasional updates. I need the blog to stay alive, but not to be filled with useless posts. Balance is the key word here.