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7. ACCOUNTS AND OTHER PAYABLE AND ACCRUED EXPENSE (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Payables and Accruals [Abstract]    
Accounts payable $ 53,707 $ 0
Salary payable 302,247 310,097
Social security insurance contribution payable 45,193 105,750
Other payable-related party (see Note 8) 22,013 89,424
Deposit on subscription of a subsidiary's share 144,798 144,798
Accrued expense-for repair work 96,410 97,913
Accrued expense-others 389,733 358,066
Total $ 1,054,101 $ 1,106,048