Met-Pro Corporation is headquartered in Harleysville, Pennsylvania. Through its business units in the United States, Canada, Europe and The Peoples Republic of China, a wide range of products and services are offered f...... Met-Pro Corporation is headquartered in Harleysville, Pennsylvania. Through its business units in the United States, Canada, Europe and The Peoples Republic of China, a wide range of products and services are offered for industrial, commercial, municipal and residential markets. These include Product Recovery and Pollution Control Technologies for purification of air and liquids Fluid Handling Technologies for corrosive, abrasive and high temperature liquids and Filtration and Purification Technologies including proprietary water treatment chemicals and filter products. The Companys products and services are sold throughout the world. Met-Pro Corporation is a public company listed on the New York Stock Exchange and trades under the symbol "MPR".