v3.21.2

Segment Reporting (Details) - Schedule of segment reporting total assets - USD ($)	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 52,803,117	$ 5,738,102
Shipping Agency and Management Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	47,347,418	2,531,074
Freight Logistic Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	5,453,848	3,176,165
Container Trucking Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 1,851	$ 30,863

X

- Definition

Amount of segment reporting of total assets.

+ References

No definition available.

+ Details

Name:	sino_SegmentReportingTotalAssets
Namespace Prefix:	sino_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAssetReconcilingItemLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	sino_ServiceAxis=sino_ShippingAgencyServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	sino_ServiceAxis=sino_FreightLogisticServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	sino_ServiceAxis=sino_ContainerTruckingServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: