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Investments in Affiliated Companies (Tables)
3 Months Ended
Mar. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]  
Ownership Percentage and Summarized Income Statement Affiliated companies accounted for on the equity basis as of March 31, 2024 are as follows:
CompanyCountryPercent
ownership
Zeolyst InternationalUSA50%
Zeolyst C.V.Netherlands50%
Following is summarized information of the combined investments(1):
Three months ended
March 31,
20242023
Sales$56,860 $55,897 
Gross profit17,177 10,110 
Operating income6,844 2,399 
Net income7,345 3,647 
(1)Summarized information of the combined investments is presented at 100%; the Company’s share of the net assets and net income of affiliates is calculated based on the percent ownership specified in the table above.