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Significant Customer and Other Information
 12 Months Ended
Mar. 31, 2020
Significant Customer and Other Information [Abstract]  
Significant Customer and Other Information
16.
Significant Customer and Other Information

Significant Customer Concentrations

The Company’s largest customers accounted for the following total percentage of net sales:
 
  
Years Ended March 31,
 
  
2020
  
2019
  
2018
 
Customer A
  
38
%
  
38
%
  
41
%
Customer B
  
20
%
  
22
%
  
25
%
Customer C
  
26
%
  
23
%
  
19
%

The Company’s largest customers accounted for the following total percentage of accounts receivable — trade:
 
  
March 31, 2020
 
March 31, 2019
 
Customer A
  
28
%
  
34
%
Customer B
  
14
%
  
18
%
Customer C
  
33
%
  
16
%
 
Geographic and Product Information
 
The Company’s products are predominantly sold in the U.S. and accounted for the following total percentage of net sales:

  
Years Ended March 31,
 
  
2020
  
2019
  
2018
 
Rotating electrical products
  
73
%
  
79
%
  
78
%
Wheel hub products
  
15
%
  
15
%
  
17
%
Brake-related products
  
9
%
  
3
%
  
3
%
Other products
  
3
%
  
3
%
  
2
%
   
100
%
  
100
%
  
100
%
 
Significant Supplier Concentrations
 
No suppliers accounted for more than 10% of the Company’s inventory purchases for the years ended March 31, 2020, 2019, and 2018.