Quarterly report pursuant to Section 13 or 15(d)

Prepaid expenses and other current assets (Details)

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Prepaid expenses and other current assets (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Deposits for inventory $ 1,033,329 $ 0
Deposits 0 22,814
Prepaid insurance 31,035 0
Other 95,367 18,647
Total prepaid expenses and other current assets $ 1,159,731 $ 41,461