v3.26.3
Amount Due to a Related Party (Details Narrative)
Sep. 30, 2026
USD ($)
Amount Due to a Related Party (Details Narrative)
Amount due to related party
$ 522,415
X
- References
No definition available.
+ Details
Name:
gplb_DueToRelatedPartyCurrent
Namespace Prefix:
gplb_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_RelatedPartyTransactionsAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration