Top 4 Small-Cap Stocks In The Pollution & Treatment Controls Industry With The Highest Operating Margin

Below are the top small-cap pollution & treatment controls stocks on the NYSE and the NASDAQ in terms of operating margin. The trailing-twelve-month operating margin at Calgon Carbon Corporation CCC is 13.80 percent. Calgon Carbon's revenue for the same period is $559.20 million. The trailing-twelve-month operating margin at Federal Signal Corporation FSS is 11.20 percent. Federal Signal's revenue for the same period is $939.90 million. The trailing-twelve-month operating margin at CECO Environmental Corp. CECE is 7.30 percent. CECO Environmental's PEG ratio is 1.63. The trailing-twelve-month operating margin at MFRI, Inc. MFRI is 1.10 percent. MFRI's EPS for the same period is $0.01.