Crawford United (formerly known as Hickok) is a holding company providing industrial products primarily to the healthcare, aerospace, education, transportation, and petrochemical markets. It operates two business segments: Commercial Air Handling Equipment and Industrial and Transportation Products. The Commercial Air Handling Equipment segment engages in designing, manufacturing, and installing large-scale commercial, institutional, and industrial custom air handling solutions. The Industrial and Transportation Products segment specializes in the manufacture of flexible interlocking metal hoses and the distribution of silicone and hydraulic hoses.