Property, Plant and Equipment, Net (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Summary of property plant and equipment
Total property, plant and equipment	$ 6,954,839	$ 6,471,423
Accumulated depreciation	(1,797,528)	(1,658,192)
Property, plant and equipment, net	5,157,311	4,813,232
Buildings and leasehold improvements [Member]
Summary of property plant and equipment
Total property, plant and equipment	5,069,572	4,596,527
Plant and equipment [Member]
Summary of property plant and equipment
Total property, plant and equipment	1,372,593	1,365,043
Motor vehicles [Member]
Summary of property plant and equipment
Total property, plant and equipment	169,918	168,984
Office equipment [Member]
Summary of property plant and equipment
Total property, plant and equipment	$ 342,756	$ 340,870