XML 44 R18.htm IDEA: XBRL DOCUMENT v3.25.4
Concentrations
 12 Months Ended
Dec. 31, 2025
Risks and Uncertainties [Abstract]  
Concentrations ConcentrationsRevenue by Geographic Location and Country
The following table presents the Company’s product revenue by geographic locations.  The geographic information includes product
revenue from the Company’s domestic and international customers based on the customers’ requested delivery locations, except for certain
cases in which the customer directed the Company to deliver its products to a location that differs from the known ultimate location of use.  In
such cases, the ultimate location of use rather than the delivery location is reflected in the table.
 
Years Ended December 31,
 
2025
2024
2023
Revenue by geographic location:
United States
2%
1%
2%
International
98%
99%
98%
Total revenue
100%
100%
100%
Product revenue by country:(1)
Saudi Arabia
28%
15%
15%
Qatar
12%
**   
**   
United Arab Emirates
**   
21%
10%
Morocco
**   
19%
**   
India
**   
11%
**   
Algeria
**   
**   
18%
China
**   
**   
15%
Others(2)
60%
34%
42%
Total
100%
100%
100%
**Zero or less than 10%.
(1)Countries representing more than 10% of product revenues for the periods presented.
(2)Countries in the aggregate, individually representing less than 10% of product revenues for the periods presented.
Customer Revenue Concentration
The following table presents the customers that account for 10% or more of the Company’s revenue and their related segment for
each of the periods presented.  Although certain customers might account for greater than 10% of the Company’s revenue at any one point in
time, the concentration of revenue between a limited number of customers shifts regularly, depending on when revenue is recognized.  The
percentages by customer reflect specific relationships or contracts that would concentrate revenue for the periods presented and do not
indicate a trend specific to any one customer.
Years Ended December 31,
 
Segment
2025
2024
2023
Customer A
Water
14%
** 
** 
Customer B
Water
12%
13%
** 
Customer C
Water
** 
11%
** 
Customer D
Water
** 
** 
13%
**Zero or less than 10%.
Long-lived Assets
All of the Company’s long-lived assets were located in the United States at December 31, 2025 and 2024.
Major Supply Vendors
The following table presents the major supply vendors accounting for 10% or more of the Company’s consolidated supply and
manufacturing costs purchases.
Years Ended December 31,
2025
2024
2023
Vendor A
13%
20%
19%
Vendor B
13%
** 
** 
Vendor C
** 
22%
21%
Vendor D
** 
** 
13%
**Zero or less than 10%.