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17. Pension plan (Details Narrative)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2013
ZHEJIANG TIANLAN
CNY
Dec. 31, 2012
ZHEJIANG TIANLAN
CNY
Dec. 31, 2011
ZHEJIANG TIANLAN
CNY
Dec. 31, 2013
ZHEJIANG JIAHUAN
CNY
Dec. 31, 2012
ZHEJIANG JIAHUAN
CNY
Aggregate contributions to pension plans and retirement benefit schemes $ 353 $ 364 $ 455 2,516 2,564 2,331 1,963 1,726