Other Payables and Accruals (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities [Line Items]
Accrued staff costs	$ 600,440	$ 763,430
Research and development costs payable	484,960	0
Other taxes payable	3,386,518	1,768,702
Construction cost payable	2,054,220	1,958,204
Other payables	617,826	447,068
Other payables and accruals	$ 7,143,964	$ 4,937,404