Concentration of risk major vendors (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Purchases Vendor A	$ 1,628,800
Purchases Vendor B	468,849
Purchases Vendor C	408,384
Total Purchases Vendor A, B and C	$ 2,506,033
Percentage of Purchases Vendor A	54
Percentage of Purchases Vendor B	16
Percentage of Purchases Vendor C	14
Total percentage of purchase of Vendors	91