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Inventories (Tables)
12 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consist of the following as of March 31, 2019 and 2018:

 

    2019     2018  
Raw materials   $ 157,382     $ 126,079  
Work in progress     160,665       113,150  
Total inventories, net   $ 318,047     $ 239,229