U.S. Tech High Return On Equity, Low Debt

Amphenol

Market Cap: US$158.1b

Designs, manufactures, and markets electrical, electronic, and fiber optic connectors in the United States, China, and internationally.

Western Digital

Market Cap: US$56.9b

Develops, manufactures, and sells data storage devices and solutions based on hard disk drive (HDD) technology in the United States, Asia, Europe, the Middle East, and Africa.

Frequency Electronics

Market Cap: US$440.6m

Engages in the design, development, manufacture, marketing, and sale of precision time and frequency control products and components for microwave integrated circuit applications.

BK Technologies

Market Cap: US$272.7m

Through its subsidiary, BK Technologies, Inc., designs, manufactures, and markets wireless communications products in the United States and internationally.

Westell Technologies

Market Cap: US$61.6m

Through its subsidiary, designs, manufactures, and distributes telecommunications solutions to telephone companies in the United States.

Neonode

Market Cap: US$34.4m

Develops optical sensing solutions for contactless touch, touch, and gesture sensing in the United States, Japan, South Korea, Germany, Sweden, China, and internationally.

Universal Safety Products

Market Cap: US$11.5m

Together with its subsidiary, engages in the marketing and distribution of safety and security products in the United States.