Pledged deposits (Details Textual)	Jul. 07, 2016 USD ($)	Jul. 07, 2016 CNY (¥)	Sep. 01, 2017 USD ($)	Sep. 07, 2016 USD ($)	Sep. 07, 2016 CNY (¥)
Shenzhen Huijie [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| $	$ 1,225,709
Bank deposits frozen \| $			$ 1,225,709	$ 1,225,709
Shenzhen Huijie [Member] \| RMB [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| ¥		¥ 8,430,792
Bank deposits frozen \| ¥					¥ 1,225,709
Construction costs [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| $	900,000
Construction costs [Member] \| RMB [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| ¥		6,100,000
Interest [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| $	29,766
Interest [Member] \| RMB [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| ¥		200,000
Compensation [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| $	$ 300,000
Compensation [Member] \| RMB [Member]
Pledged deposits (Textual)
Loss Contingency, Damages Sought, Value \| ¥		¥ 1,900,000