Note 9 - Credit facilitates: Schedule of banking facilities (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Bank of China (Shenzhen Bao'an Branch)
Line of Credit Facility, Frequency of Payment and Payment Terms	12 months from the first actual withdrawal date
Line of Credit Facility, Interest Rate Description	Floating rate, repriced every 6 months; annualized interest rate 3.05%; effectively 5 bps above 1-year LPR
Line of Credit Facility, Collateral	Joint borrowers are Tongri Industrial Automation Equipment (Shenzhen) Co., Ltd. and Mr. Jingan Tang, senior manager.
Long-Term Line of Credit	$ 714,990	$ 0
DBS Bank, Ltd.
Line of Credit Facility, Frequency of Payment and Payment Terms	300 monthly instalments from the date of first disbursement
Line of Credit Facility, Interest Rate Description	Effective on June 6, 2022, the repriced interest rate changes to 1st year and 2nd year fixed rate at 2.58%; SORA in-advance plus 3.00% (Margin)
Line of Credit Facility, Collateral	Guaranteed by Mr. Wanjun Yao, the major shareholder, and the properties of Tung Resources
Long-Term Line of Credit	$ 1,276,318	1,241,762
Long-Term Line of Credit	1,991,308	1,241,762
Broker-Dealer, Bank Loan, Short-Term	(808,394)
Current portion of banking facilities	(93,404)	(80,588)
Banking facilities	$ 1,182,914	$ 1,161,174

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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