Related Party Balance And Transactions (Tables)

6 Months Ended

Jun. 30, 2026

Related Party Transactions [Abstract]

Schedule of Major Transactions with Related Parties

Major transactions with related parties


				For the Six Months Ended June 30,
				2025				2026
				US$				US$
Interest income from Beijing Puyan		(i)			768			-
Purchase of materials from Shenzhen Zhichong		(ii)			33,363				526
Sell products to Shenzhen Zhichong		(ii)			11,693			-
Sell products to Zhichong New Energy		(iii)			897,497				226

Schedule of Balance of Amounts Due from Related Parties

Balance of amounts due from related parties:


				As of December 31,				As of June 30,
				2025				2026
				US$				US$
Beijing Puyan		(i)			273,066				282,874
Shenzhen Zhichong		(ii)			11,951				43,184
Zhichong New Energy		(iii)			2,737,608				2,317,482
Amounts due from related parties, gross					3,022,625				2,643,540
Allowance for expected credit losses					(504,792	)			(909,207	)
Total					2,517,833				1,734,333

The movements of the allowance for doubtful accounts were as follows:


		As of December 31,				As of June 30,
		2025				2026
		US$				US$
Balance at the beginning of the year/period		-					(504,792	)
Provision for expected credit losses			(496,730	)			(381,936	)
Foreign currency translation			(8,062	)			(22,479	)
Balance at the end of the year/period			(504,792	)			(909,207	)

Schedule of Balance of Amounts Due to a Related Party

Balance of amounts due to a related party


				As of December 31,				As of June 30,
				2025				2026
				US$				US$
Shenzhen Zhichong		(ii)			164,046				159,996
Total					164,046				159,996