Note 7 - Intangible Assets, Net: Schedule of Finite-Lived Intangible Assets (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017
Intangible assets, net	$ 11,862,017	$ 12,042,758
Use Rights
Intangible Assets, Gross (Excluding Goodwill)	1,613,842	1,470,875
Patent (non-US No. ZL200610068850.0)
Intangible Assets, Gross (Excluding Goodwill)	7,315,405	6,667,343
Patent (non-US No. ZL200510045001.9)
Intangible Assets, Gross (Excluding Goodwill)	9,859,894	8,986,419
Yuanbaofen product
Intangible Assets, Gross (Excluding Goodwill)	1,755,443	1,599,930
Patents
Finite-Lived Intangible Assets, Accumulated Amortization	$ (8,682,567)	$ (6,681,809)

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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