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Significant Customer and Other Information
 6 Months Ended
Sep. 30, 2017
Significant Customer and Other Information [Abstract]  
Significant Customer and Other Information
7. Significant Customer and Other Information

Significant Customer Concentrations

The Company’s largest customers accounted for the following total percentage of net sales:
 
  
Three Months Ended
September 30,
  
Six Months Ended
September 30,
 
Sales
 
2017
  
2016
  
2017
  
2016
 
Customer A
  
48
%
  
45
%
  
44
%
  
48
%
Customer B
  
25
%
  
21
%
  
25
%
  
18
%
Customer C
  
14
%
  
19
%
  
15
%
  
19
%
Customer D
  
3
%
  
4
%
  
5
%
  
4
%

The Company’s largest customers accounted for the following total percentage of accounts receivable—trade:
 
Accounts receivable - trade
 
September 30, 2017
  
March 31, 2017
 
Customer A
  
31
%
  
33
%
Customer B
  
15
%
  
18
%
Customer C
  
17
%
  
12
%
Customer D
  
17
%
  
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:
 
  
Three Months Ended
September 30,
  
Six Months Ended
September 30,
 
  
2017
  
2016
  
2017
  
2016
 
Rotating electrical products
  
76
%
  
80
%
  
77
%
  
76
%
Wheel hub products
  
18
%
  
20
%
  
18
%
  
21
%
Brake master cylinders products
  
3
%
  
3
%
  
3
%
  
4
%
Other products
  
3
%
  
(3
)%
  
2
%
  
(1
)%
   
100
%
  
100
%
  
100
%
  
100
%

Significant Supplier Concentrations

The Company had no suppliers that accounted for more than 10% of inventory purchases for the three and six months ended September 30, 2017 and 2016.