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Note 1 - Organization and Principal Activities (Details)
9 Months Ended
Dec. 31, 2017
Landway Nano Bio Tech Inc  
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions 100.00%
Shandong Spring Pharmaceutical Co Ltd  
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions 97.00%