Advances to Suppliers (Details 1) - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Schedule of advances to suppliers - related party
Freight fees		$ 3,414,619
Total advances to suppliers-related party		$ 3,414,619

Carrying value of capitalized payments made in advance for inventory that is expected to be received from related party within one year or the normal operating cycle, if longer.

No definition available.

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