v3.21.1

Advances to Suppliers (Details) - Schedule of advances to suppliers – third parties - USD ($)		9 Months Ended	12 Months Ended
		Mar. 31, 2021	Jun. 30, 2020
Schedule of advances to suppliers – third parties [Abstract]
Freight fees	[1]	$ 612,860	$ 48,875
[1] The advanced freight fee is the Company’s prepayment made for various shipping costs for shipments from April to June 2021.

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- Definition

Advances to suppliers accounts payable

+ References

No definition available.

+ Details

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Namespace Prefix:	sino_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- References

No definition available.

+ Details

Name:	sino_ScheduleOfAdvancesToSuppliersThirdPartiesAbstract
Namespace Prefix:	sino_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration