Joint Venture (Details Textual) - USD ($)	6 Months Ended
Sep. 30, 2017	Sep. 30, 2016
Increase Or Decrease In Inter Company Profit In Inventory	$ 72,820	$ 249,186
Hong Kong Joint Venture [Member]
Equity Method Investment, Ownership Percentage	50.00%
Products Purchased From Joint Venture	$ 5,548,858	$ 5,726,467

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant