SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Financial informations of OBON Thailand (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Assets
Accounts receivable	$ 6,460	$ 5,685
Other receivables	15,566	164,806
Prepayments and deposits	122,099	163,744
Deposits paid for acquisition of property, plant and equipment	307,200	319,787
Property, plant and equipment, net	97,790	108,319
TOTAL ASSETS	634,823	776,102
Liabilities
Accruals	198,991	70,766
Bank overdrafts	12,098	13,739
TOTAL LIABILITIES	1,328,744	1,181,480
OBON Thailand
Assets
Cash at bank and on hand	15,330	11,498
Accounts receivable	6,460	5,685
Other receivables	13,083	13,570
Prepayments and deposits	121,920	163,558
Deposits paid for acquisition of property, plant and equipment	307,200	319,787
Property, plant and equipment, net	95,442	105,313
TOTAL ASSETS	559,435	619,411
Liabilities
Accruals	138,733	60,015
Bank overdrafts	12,098	13,739
Short-term loan	855,968	854,318
Amounts due to fellow subsidiaries	166,666	166,666
TOTAL LIABILITIES	$ 1,173,465	$ 1,094,738