Accounts receivable, net (Tables)

12 Months Ended

Dec. 31, 2021

Accounts receivable, net

	2021			2020
	US$’000			US$’000
Contract receivables		3,661			3,229
Less: allowance for doubtful accounts		(30	)		(30	)
		3,631			3,199

Allowance for doubtful accounts activity

	2021		2020
	US$’000		US$’000
Balance at beginning of period		30		36
Less : reversal in allowances		-		(6	)
Balance at end of period		30		30

Age analysis of past due account receivables

	2021		2020
	US$’000		US$’000
Current		1,441		2,014
Past due
1-30 days		1,570		85
31-60 days		495		202
61-90 days		108		41
Greater than or equal to 91 days		17		857
		2,190		1,185
		3,631		3,199

ZHEJIANG TIANLAN

Accounts receivable, net

	2021			2020
	RMB’000			RMB’000
Contract receivables		148,889			160,803
Less: allowance for doubtful accounts		(42,867	)		(42,182	)
		106,022			118,621

Allowance for doubtful accounts activity

	2021			2020
	RMB’000			RMB’000
Balance at beginning of period		42,182			26,484
Add: provision for allowances		868			22,161
Less: Reversal of provision for doubtful accounts		(183	)		(6,463	)
Balance at end of period		42,867			42,182

Age analysis of past due account receivables

	2021		2020
	RMB’000		RMB’000
Within 1 year		82,534		76,590
1 year -  2 years		12,144		31,389
2 years - 3 years		5,111		6,128
3 years - 4 years		5,141		3,678
4 years - 5 years		1,092		836
		106,022		118,621