Short-term Bank Loans (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Short-term Bank Loans
Loan Payable	$ 13,983,524	$ 11,661,761
Loan 1 [Member]
Short-term Bank Loans
Loan Payable	5,389,483	5,297,907
Interest rate per annum	9.465%	9.465%
Loan 2 [Member]
Short-term Bank Loans
Loan Payable		3,181,927
Interest rate per annum	8.528%	8.528%
Loan 3 [Member]
Short-term Bank Loans
Loan Payable		2,386,445
Interest rate per annum	6.56%	6.56%
Loan 4 [Member]
Short-term Bank Loans
Loan Payable	2,120,188
Interest rate per annum	6.00%	6.00%
Loan 5 [Member]
Short-term Bank Loans
Loan Payable		795,482
Interest rate per annum	8.528%	8.528%
Loan 6 [Member]
Short-term Bank Loans
Loan Payable	1,618,463
Interest rate per annum	7.80%	7.80%
Loan 7 [Member]
Short-term Bank Loans
Loan Payable	$ 4,855,390
Interest rate per annum	6.60%	6.60%