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7. Prepayments and other current assets (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2016
CNY (¥)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
CNY (¥)
Dec. 31, 2015
USD ($)
Cost and estimated earnings in excess of billings | $   $ 343   $ 144
Deposits paid | $   70   57
Prepayment | $   221   59
Other receivables | $   156   214
Other tax recoverable | $   25   26
Prepayments and other current assets | $   $ 815   $ 500
ZHEJIANG JIAHUAN        
Prepayments and other receivables ¥ 11,994   ¥ 13,039  
Deposits paid 3,448   4,433  
Prepayments and other current assets 15,442   17,472  
ZHEJIANG TIANLAN        
Contracts costs incurred plus estimated earnings 389,534   160,634  
Less: Progress billings (318,748)   (62,994)  
Cost and estimated earnings in excess of billings 70,786   97,640  
Prepayment 24,100   13,828  
Other receivables 14,851   8,090  
Other current assets 1,320   0  
Prepayments and other current assets ¥ 111,057   ¥ 119,558