Vinyl pressing plant located in Holtsville, New York (USA), established in 1974.

President: Raymond Kissel.

It operated 8 presses for 7" and 12" compression and pressed Keysor-Century vinyl.

Records pressed here can sometimes be identified by “Donora” in the runout grooves.

Double pressing ring measured 35/70mm.

Name variations:
Donora
Donora Manufacturing Co., Inc.