ECW Technology, Inc., founded in 1995 in Los Angeles, California, specializes in gas-phase contamination control and chemical filtration solutions for cleanroom and controlled environments.

The company was established by Dr. Rea-Tiing Liu, a chemical engineer who developed specialized activated carbon media and filtration systems designed to remove airborne molecular contaminants from critical environments. ECW Technology’s early work focused on developing high-performance activated carbon media for air purification and chemical filtration applications.

Beginning in the late 1990s, ECW expanded its focus to advanced filtration solutions for semiconductor manufacturing, microelectronics facilities, laboratories, and other environments where contamination control is essential. The company introduced pleated chemical filters and specialized carbon media designed for MAU, FFU, and recirculation air systems used in cleanroom applications.

Over time, ECW Technology supported projects across semiconductor, life science, and advanced manufacturing sectors, providing filtration media and engineering support to improve air purity and contamination control in sensitive production environments.

Today, ECW Technology continues to provide activated carbon filtration media and chemical filtration solutions used in cleanroom contamination control systems.