6. Accounts receivable, net (Details) In Thousands, unless otherwise specified	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2013 ZHEJIANG TIANLAN CNY	Dec. 31, 2012 ZHEJIANG TIANLAN CNY	Dec. 31, 2013 ZHEJIANG JIAHUAN CNY	Dec. 31, 2012 ZHEJIANG JIAHUAN CNY	Dec. 31, 2011 ZHEJIANG JIAHUAN CNY
Accounts receivable	$ 4,151	$ 3,186	166,433	245,892	75,445	71,791
Less: Allowance for doubtful debts	(69)	(97)	(19,306)	(19,522)	(8,000)	(8,461)	(13,225)
Net	$ 4,082	$ 3,089	147,127	226,370	67,445	63,330

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.9)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.5)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Balance Type:	debit
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