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6. Accounts receivable, net (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 CNY (¥)
Accounts receivable | $		$ 4,431		$ 4,557
Less: Allowance for doubtful debts | $		(38)		(57)
Net | $		$ 4,393		$ 4,500
ZHEJIANG JIAHUAN
Accounts receivable	¥ 91,069		¥ 99,864
Less: Allowance for doubtful debts	(32)		(32)		¥ (131)
Net	91,037		99,832
ZHEJIANG TIANLAN
Accounts receivable	204,166		238,325
Less: Allowance for doubtful debts	(39,066)		(30,418)
Net	¥ 165,100		¥ 207,907

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- Definition

For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

+ References

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- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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- Definition

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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