Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Deferred tax assets
Net operating loss	$ 88,939	$ 87,285
Deferred revenue	10,136	13,496
Unbilled cost	450,345	441,973
Unbilled interest expenses	37,376	36,682
Depreciation	7,421	5,586
Software amortization	254,343	224,254
Allowance for doubtful accounts	230,741	106,569
Inventories obsolescence	(5,507)	(6,408)
Unrealized losses on trading securities	1,745	1,712
Accrued Bonus	44,510	43,682
Other	51,787	46,771
Total deferred tax assets	1,171,836	1,001,602
Valuation allowance	(15,159)	(14,878)
Total deferred tax assets, net	1,156,677	986,724
Deferred tax liabilities
Unbilled revenue	(2,226,908)	(2,188,848)
Unbilled interest income	(365,574)	(318,899)
Deferred government subsidiary income	(41,286)	(40,519)
Unrealized gain on short-term investment	(37,976)	(25,575)
Other	(11,994)	(11,792)
Total deferred tax liabilities	(2,683,738)	(2,585,633)
Net deferred tax liabilities, net	$ (1,527,061)	$ (1,598,909)

Amount of deferred tax assets depreciation expenses.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Deferred government subsidiary income.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee bonuses.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from provisions, reserves, allowances, and accruals, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on accounts receivable.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from unrealized loss on investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences from capitalized costs.

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Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments).

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Amount of deferred tax liability attributable to taxable temporary differences classified as other.

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Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.

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