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

is 12.55%. Calgon Carbon's ROE for the same period is 11.91%. The trailing-twelve-month operating margin at CECO Environmental

is 10.38%. CECO Environmental's revenue for the same period is $162.92 million. The trailing-twelve-month operating margin at Tennant Company

is 8.75%. Tennant's PEG ratio is 1.22. The trailing-twelve-month operating margin at Fuel-Tech

is 7.54%. Fuel-Tech's EPS for the same period is $0.21.