Note 3 - Summary of significant accounting policies (Tables)

3 Months Ended

Mar. 31, 2013

Balance Sheet Items Except Equity Accounts [Member]

Foreign Currency Exchange Rates [Table Text Block]

	March 31, 2013		December 31, 2012
Balance sheet items, except for equity accounts		6.2816		6.3161

Statements of Income, Comprehensive Income and Cash Flows [Member]

Foreign Currency Exchange Rates [Table Text Block]

	Three Months Ended March 31,
	2013		2012
Items in the statements of income and comprehensive income, and statements of cash flows		6.2858		6.3201