Prism Quartet Inc

Wm. J. Donovan Co., based in Philadelphia, designs, fabricates, and installs sheet metal and systems for the heating, ventilation, and air conditioning and related industries. Its specialty products include ventilated dump bins, slot hoods, swing arm hoods, tablet feed chutes, drum dump bins, and glatt bowl hoods. Members of the company are active in the Sheet Metal and Air Conditioning Contractors National Association and its local chapter, the National Environmental Balancing Bureau. They are also active in the Mid Atlantic Environmental Balancing Association, the National Association of Women in Construction, the American Welding Society, the American Society of Heating, Refrigerating, and Air Conditioning, and Sheet Metal Workers' Local Union #19.

Metlab, Inc., located in Glenside, PA, is a leading heat treating company founded in 1998. Specializing in metal hardening, quenching, tempering, and a range of other thermal treatments, Metlab offers superior quality and reliability for parts ranging from 1 pound to 25 tons. With exceptional expertise in heat treating large components up to 15 feet in diameter and 22 feet deep, Metlab's extensive equipment base provides customers with the broadest available surface treatment and size capability. From carburizing to nitriding, the company's processes ensure efficient processing for a variety of materials, including steel, copper, aluminum, nickel, titanium, and exotic alloys. Generated from the website