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Significant Accounting Policies (Tables)
12 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Schedule of property and equipment net
   Useful Lives
Buildings  20 years
Machinery  10 years
Furniture, fixture and electronic equipment  3-10 years
Vehicles  4 years
Schedule of foreign currency translation
  March 31,
2019
  March 31,
2018
       
Period-end spot rate US$1=RMB 6.7335 Yuan   US$1=RMB 6.2881 Yuan
Average rate US$1=RMB 6.7317 Yuan   US$1=RMB 6.6021 Yuan