v3.26.3
Capital surplus (Details Narrative)
6 Months Ended
Jun. 30, 2026
USD ($)
IfrsStatementLineItems [Line Items]
Capital surplus
$ 1,743,411
Share premium [member]
IfrsStatementLineItems [Line Items]
Capital surplus
$ 1,743,411
X
- References
No definition available.
+ Details
Name:
YMAT_IfrsStatementLineItems
Namespace Prefix:
YMAT_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Cancellation of shareholder’s loan.
+ References
No definition available.
+ Details
Name:
YMAT_IncreaseDecreaseThroughCancellationOfShareholdersLoan
Namespace Prefix:
YMAT_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration
X
- Details
Name:
ifrs-full_ComponentsOfEquityAxis=ifrs-full_SharePremiumMember
Namespace Prefix:
Data Type:
na
Balance Type:
Period Type: