Revolving Lines of Credit and Loan Facilities (Details) (Long-Term Debt [Member], USD $)	Mar. 31, 2013
Debt Instrument, Face Amount	$ 16,387,119
Long-term Debt, Gross	13,972,308
Debt Instrument, Unused Borrowing Capacity, Amount	2,414,811
Loans Payable [Member]
Debt Instrument, Face Amount	5,720,451	[1]
Long-term Debt, Gross	5,720,451
Debt Instrument, Unused Borrowing Capacity, Amount	0
Import/Export Line Of Credit [Member] | Line Of Credit [Member]
Lines of credit and loan facilities, Granted facilities	8,653,847
Lines of credit and loan facilities, Utilized facilities	6,395,985
Lines of credit and loan facilities, Not Utilized Facilities	2,257,862
Bank Overdrafts [Member]
Debt Instrument, Face Amount	474,359	[2]
Long-term Debt, Gross	327,252
Debt Instrument, Unused Borrowing Capacity, Amount	147,107
Revolving Short Term Loan [Member]
Debt Instrument, Face Amount	1,538,462	[1]
Long-term Debt, Gross	1,528,620
Debt Instrument, Unused Borrowing Capacity, Amount	$ 9,842

[1] The bank loans are combined from the summary of Note 9, total bank loans amount to $7,249,071 with a revolving short term loan of $1,528,620. The revolving short term loan is placed under Other Current Liabilities on the balance sheet. It has a facility limit of $1,538,462, bearing an interest rate of 0.5% below Hong Kong prime rate per annum.

[2] Including in cash and cash equivalents