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: |