Quarterly report pursuant to Section 13 or 15(d)

Related party balance and transaction (Details1)

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Related party balance and transaction (Details1) - USD ($)
2 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2017
Income:      
Sales $ 1,264,934 $ 1,422,533 $ 2,046,856
Rental income 0 7,012 18,311
Expenses:      
Equipment rental fees $ 0 $ 162,927 $ 325,229