Holter,
Sorry for the delayed response here, but my work keeps interrupting my play time! While I haven't followed the Sino line as it appears that the Redwood side of the business is getting all of the headlines, it at least appears to me that Sino's revenues are moving along, helping to pay the bills to some extent. You do raise an interesting point, as I've stated I do think the medical side of SIV has solid potential as well.
Not sure how often Rain touches base with IR, but this would be an interesting point to discuss in future dialogue.
Doc