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7. OTHER PAYABLE AND ACCRUED EXPENSE (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Other Payable And Accrued Expense    
Salary payable $ 246,155 $ 241,343
Social security insurance contribution payable 143,033 140,326
Other payable-related party (see Note 8) 23,162 90,900
Accrued expense-construction 2,637,910 104,246
Accrued expense-others 382,944 328,443
Total $ 3,433,204 $ 905,258