Businesses

APA Enterprises

APA Enterprises, Inc. was established in 1979. Since then the company has focused on leading edge research in sophisticated optoelectronic and optical system areas. APA Enterprises, Inc. now consists of the Optronics group and the Cables & Networks group. These groups develop, design, manufacture and market fiber optics, copper and gallium nitride (GaN) based components and devices for industrial, commercial, consumer and scientific applications. Optronics is active in the development, design, manufacture and marketing of ultraviolet (UV) measurement instruments for consumers and industrial customers, and gallium nitride (GaN) based transistors for power amplifiers and other commercial applications. Cables & Networks, established in 2003 through two acquisitions with over twenty years apiece in the telecom industry, designs, manufactures and markets a variety of fiber optic and copper components to the data communication and telecommunication industries. Its broad range of product offerings include fiber distribution systems, optical components and fiber and copper cable assemblies that serve Fiber-to-the-Home, large enterprise, and OEM markets.

Castle Metals

3100 82nd Lane NE
Blaine, MN 55449

Founded in 1890, A. M. Castle & Co. is a specialty metals and plastics distribution company serving the North American market, principally within the producer durable equipment sector. Its customer base includes many Fortune 500 companies as well as thousands of medium and smaller-sized firms spread across a wide spectrum of industries. Within its core metals business, it specializes in the distribution of carbon, alloy and stainless steels; nickel alloy; and aluminum. Through its subsidiary, Total Plastics, Inc., the Company also distributes a broad range of value-added industrial plastics. Together, Castle operates over 50 locations throughout North America. Its common stock is traded on the American and Chicago Stock Exchange under the ticker symbol "CAS".