XML 187 R139.htm IDEA: XBRL DOCUMENT
v3.26.1

Schedule of loss rate methodology (Details) - USD ($) | Dec. 31, 2025 | Dec. 31, 2024
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IfrsStatementLineItems [Line Items] |  |
Expected loss rate |  |
Total book value | $ 3,578,974 | $ 1,277,928
Expected credit loss | $ 331,761 |
Current [member] |  |
IfrsStatementLineItems [Line Items] |  |
Expected loss rate | 0.01% | 0.00%
Total book value | $ 1,764,589 | $ 1,210,294
Expected credit loss | $ 122 |
Later than one month and not later than two months [member] |  |
IfrsStatementLineItems [Line Items] |  |
Expected loss rate | 0.08% | 0.00%
Total book value | $ 249,410 | $ 49,695
Expected credit loss | $ 203 |
Later than two months and not later than three months [member] |  |
IfrsStatementLineItems [Line Items] |  |
Expected loss rate | 14.20% | 0.00%
Total book value | $ 1,558,011 | $ 17,939
Expected credit loss | $ 257,810 |
Later than three months [member] |  |
IfrsStatementLineItems [Line Items] |  |
Expected loss rate | 92.93% | 0.61%
Total book value | $ 5,499 |
Expected credit loss | $ 72,269 |
Over Than Three Months [member] |  |
IfrsStatementLineItems [Line Items] |  |
Expected loss rate | 92.63% | 99.72%
Total book value | $ 1,465 |
Expected credit loss | $ 1,357 |

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- Definition Accounts receivables. + References No definition available. + Details
Name: | YMAT_AccountsReceivables
Namespace Prefix: | YMAT_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Credit loss for allowance + References No definition available. + Details
Name: | YMAT_CreditLossForAllowance
Namespace Prefix: | YMAT_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Expected loss rate + References No definition available. + Details
Name: | YMAT_ExpectedLossRate
Namespace Prefix: | YMAT_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | YMAT_IfrsStatementLineItems
Namespace Prefix: | YMAT_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_PastDueStatusAxis=ifrs-full_CurrentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_PastDueStatusAxis=ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_PastDueStatusAxis=ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_PastDueStatusAxis=ifrs-full_LaterThanThreeMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_PastDueStatusAxis=YMAT_OverThanThreeMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |