11. Land use right, net (Details) (CNY) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ZHEJIANG TIANLAN
Land use right	7,361	7,315
Less: Accumulated amortisation	(1,167)	(980)
Net	6,194	6,335
Amortisation expense	141	177	148
ZHEJIANG JIAHUAN
Land use right	7,987	7,987
Less: Accumulated amortisation	(1,210)	(1,047)
Net	6,777	6,940
Amortisation expense	163	163	163

Gross carrying amount before accumulated amortization as of the balance sheet date of an intangible asset that arises from a contractual arrangement with a third party (not including franchise rights and license agreements).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedContractualRightsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant