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Investments in Affiliated Companies (Tables)
9 Months Ended
Sep. 30, 2023
Equity Method Investments and Joint Ventures [Abstract]  
Ownership Percentage and Summarized Income Statement Affiliated companies accounted for on the equity basis as of September 30, 2023 are as follows:
CompanyCountryPercent
ownership
Zeolyst InternationalUSA50%
Zeolyst C.V.Netherlands50%
Following is summarized information of the combined investments(1):
Three months ended
September 30,
Nine months ended
September 30,
2023202220232022
Sales$81,115 $67,043 $236,200 $218,389 
Gross profit22,205 17,794 66,776 70,546 
Operating income12,414 10,228 39,916 44,340 
Net income12,617 9,540 42,189 44,448 
(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.