v3.21.2

Advances to Suppliers (Details) - Schedule of advances to suppliers – third parties - USD ($) | 12 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Schedule of advances to suppliers – third parties [Abstract] |  |  |
Freight fees | [1] | $ 880,000 | $ 48,875
[1] | The advanced freight fee is the Company’s prepayment made for various shipping costs for shipments from July to September 2021.

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- Definition Advances to suppliers accounts payable + References No definition available. + Details
Name: | sino_AdvancesToSuppliersAccountsPayable
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