Summary of Significant Accounting Policies - Schedule of concentration (Details)	3 Months Ended	9 Months Ended
	Dec. 31, 2018	Dec. 31, 2018
Sales Revenue, Net [Member]
Concentration Percentage	17.70%	58.40%
Accounts receivable [Member]
Concentration Percentage	66.35%	66.35%
A [Member] | Sales Revenue, Net [Member]
Concentration Percentage		26.23%
A [Member] | Accounts receivable [Member]
Concentration Percentage
B [Member] | Sales Revenue, Net [Member]
Concentration Percentage		21.22%
B [Member] | Accounts receivable [Member]
Concentration Percentage	12.89%	12.89%
C [Member] | Sales Revenue, Net [Member]
Concentration Percentage		10.95%
C [Member] | Accounts receivable [Member]
Concentration Percentage
D [Member] | Sales Revenue, Net [Member]
Concentration Percentage
D [Member] | Accounts receivable [Member]
Concentration Percentage	39.36%	39.36%
E [Member] | Sales Revenue, Net [Member]
Concentration Percentage	17.70%
E [Member] | Accounts receivable [Member]
Concentration Percentage	14.10%	14.10%