12.	CONCENTRATIONS

Major Customers

For the six months ended June 30, 2011 and 2010, and for the three months ended June 30, 2011 and 2010, approximately 13%, 10%, 15% and 16% of the Company’s revenues were received from one customer.

At June 30, 2011 and 2010, receivables from four customers were approximately 12%, 10%, 10%, 9% and 11%, 11%, 10%, 8%, respectively.

Revenues

For the six months ended June 30, 2011 and 2010, and for the three months ended June 30, 2010 and 2011, the Company’s three top selling products accounted, in the aggregate, for approximately 80%, 56%, 82% and 53%, respectively, of its total net revenues.

The following represents the revenues by products, all derived from operations in the PRC:

	For the six months ended June 30,				For the three months ended June 30,
	2011		2010		2011		2010
	US$		US$		US$		US$
Products
Medical Devices		7,065,380		5,203,566		4,431,320		3,338,800
Respiratory and Oxygen Homecare		2,006,628		899,538		1,797,623		534,327
Technical Service		1,593,482		1,368,847		1,483,841		957,735
		10,665,490		7,471,951		7,712,784		4,830,862