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Land use right, net (Details 1) - CNY (¥) ¥ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
ZHEJIANG TIANLAN |  |
2018 | ¥ 149 |
2019 | 149 |
2020 | 149 |
2021 | 149 |
2022 | 149 |
Thereafter | 4,853 |
Total | 5,598 | ¥ 5,747
ZHEJIANG JIAHUAN |  |
2018 | 163 |
2019 | 163 |
2020 | 163 |
2021 | 163 |
2022 | 163 |
Thereafter | 5,310 |
Total | ¥ 6,125 | ¥ 6,288

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