v3.3.1.900
Major Customers and Suppliers
12 Months Ended
Dec. 31, 2015
Risks and Uncertainties [Abstract]  
Major Customers and Suppliers
(16) Major Customers and Suppliers
Sales of nitrogen fertilizer to major customers, as a percentage of total net sales, were as follows:
 
December 31,
 
2015
 
2014
 
2013
Nitrogen Fertilizer
 
 
 
 
 
Customer A
10
%
 
17
%
 
15
%
Customer B
14
%
 
10
%
 
13
%
 
24
%
 
27
%
 
28
%

The Partnership maintains contracts with CVR Energy and its affiliates. See Note 14 ("Related Party Transactions").
The Partnership currently buys several key raw materials through a single supplier, Linde, which owns, operates and maintains an air separation plant. The inability of Linde to perform in accordance with its contractual obligations could have a material adverse effect on the Partnership's results of operations, financial condition and ability to make cash distributions. CVR Energy maintains, for our benefit, contingent business interruption insurance with a $200.0 million limit for any interruption caused by physical damage to the air separation plant that results in a loss of production from an insured peril.