XML 37 R14.htm IDEA: XBRL DOCUMENT
v3.25.4

Prepaid Deposit for Factory Building | 12 Months Ended
--- | ---
Sep. 30, 2025
Prepaid Deposit for Factory Building [Abstract] |
Prepaid Deposit for Factory Building | Note 7 – Prepaid Deposit for Factory Building During the year, the Company paid a deposit of $2,344,707 in connection with the planned acquisition of a factory building located at Kampung Baru Subang, Selangor State, Central Malaysia. The deposit represents an advance payment toward the purchase price under the sale and purchase agreement executed on August 19, 2025. As the acquisition is expected to be completed after twelve months from the reporting date, the deposit is classified as a non-current asset.

X
- Definition The entire disclosure for prepaid deposit. + References No definition available. + Details
Name: | gti_PrepaidDepositDisclosureTextBlock
Namespace Prefix: | gti_
Data Type: | dtr:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration