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AAC Technologies Holdings Inc., an investment holding company, provides solutions for smart devices in Mainland China, Hong Kong Special Administrative Region of the People's Republic of China, Taiwan, other Asian countries, the United States, and Europe. The company operates through Acoustics Product, Electromagnetic Drives and Precision Mechanics, Optics Products, Sensor and Semiconductor Products, and other products segments. It provides acoustics products for smartphones, laptops, mid-range tablets, and smart glasses; and manufactures and sells haptic motors that are used in smartphones, smart watches, tablets, intelligent automobiles, game controllers, and virtual reality/augmented reality controllers. The company also offers precision mechanics comprising metal casing products; optical lenses, camera modules, and optical actuators, as well as voice coil motor products; and micro electro-mechanical systems (MEMS) and ASIC chips design, packaging, and testing services for consumer electronics, automotive, smart wearables, robotics, IoT, and other sectors. In addition, it provides research and development services; manufactures and sells tooling and precision components, electronic components, and related accessories; and provides electroplating services, as well as engages in investment activities. The company was formerly known as AAC Acoustic Technologies Holdings Inc. and changed its name to AAC Technologies Holdings Inc. in May 2011. AAC Technologies Holdings Inc. was founded in 1993 and is headquartered in Shenzhen, the People's Republic of China.

ESCO Technologies Inc. produces and supplies engineered products and systems for industrial and commercial markets worldwide. It operates through three segments: Aerospace & Defense, Utility Solutions Group, and RF Test & Measurement. The Aerospace & Defense segment designs and manufactures filtration products, including hydraulic filter elements and fluid control devices used in commercial aerospace applications; filter mechanisms used in micro-propulsion devices for satellites; and custom designed filters for manned aircraft and submarines. It also designs, develops, and manufactures elastomeric-based signature reduction solutions for U.S. naval vessels; and mission-critical bushings, pins, sleeves, and precision-tolerance machined components for landing gear, rotor heads, engine mounts, flight controls, and actuation systems for the aerospace and defense industries. The Utility Solutions Group segment provides diagnostic testing solutions that enable electric power grid operators to assess the integrity of high-voltage power delivery equipment; and decision support tools for the renewable energy industry, primarily wind and solar. The RF Test & Measurement segment designs and manufactures RF test and secure communication facilities, acoustic test enclosures, RF and magnetically shielded rooms, RF measurement systems, and broadcast and recording studios; and RF absorptive materials, filters, antennas, field probes, test cells, proprietary measurement software, and other test accessories to perform various tests. The company distributes its products through a network of distributors, sales representatives, direct sales teams, and in-house sales personnel. The company was incorporated in 1990 and is based in Saint Louis, Missouri.

Iridium Communications Inc. provides mobile voice and data communications services and products to businesses, the United States and international governments, non-governmental organizations, and consumers worldwide. The company offers postpaid mobile voice and data satellite communications; prepaid mobile voice satellite communications; push-to-talk; broadband data; and Internet of Things (IoT) services. It also provides hosted payload and other data services, such as satellite time and location services; and inbound connections from the public switched telephone network, short message, subscriber identity module, activation, customer reactivation, and other peripheral services. In addition, the company offers voice and data solutions comprising personnel tracking devices; asset tracking devices for equipment, vehicles, and aircrafts; beyond-line-of-sight aircraft communications applications; maritime communications applications; specialized communications solutions for high-value individuals; mobile communications and data devices for the military and other government agencies, such as secure satellite handsets, as well as netted voice, messaging, and paging services; and maintenance services for the United States government's dedicated gateway. Further, it provides satellite handsets, voice and data modems, broadband data devices, and IoT data devices; various accessories for its devices that include batteries, holsters, earbud headphones, portable auxiliary antennas, antenna adaptors, USB data cables, charging units, and others; and engineering and support services. Iridium Communications Inc. sells its products and services to commercial end users through a wholesale distribution network that include service providers, and value-added resellers and manufacturers. The company was formerly known as Iridium Holdings LLC and changed its name to Iridium Communications Inc. in September 2009. Iridium Communications Inc. is headquartered in McLean, Virginia.

Lumentum Holdings Inc. manufactures and sells optical and photonic products in the Americas, the Asia-Pacific, Europe, the Middle East, and Africa. The company operates through two segments: Optical Communications (OpComms) and Commercial Lasers (Lasers). The OpComms segment offers components, modules, and subsystems that enable the transmission and transport of video, audio, and data over high-capacity fiber optic cables. It offers tunable transponders, transceivers, and transmitter modules; tunable lasers, receivers, and modulators; transport products, such as reconfigurable optical add/drop multiplexers, amplifiers, and optical channel monitors, as well as components, including 980nm, multi-mode, and Raman pumps; and switches, attenuators, photodetectors, gain flattening filters, isolators, wavelength-division multiplexing filters, arrayed waveguide gratings, multiplex/de-multiplexers, and integrated passive modules. This segment also provides Super Transport Blade, which integrates optical transport functions into a single-slot blade; vertical-cavity surface-emitting lasers; directly modulated and electro-absorption modulated lasers; and laser illumination sources for 3D sensing systems. It serves customers in telecommunications, data communications, and consumer and industrial markets. The Commercial Lasers segment offers diode-pumped solid-state, fiber, diode, direct-diode, and gas lasers, such as argon-ion and helium-neon lasers for use in original equipment manufacturer applications. It serves customers in markets and applications, such as sheet metal processing, general manufacturing, biotechnology, solar cell processing, graphics and imaging, remote sensing, and precision machining. Lumentum Holdings Inc. was incorporated in 2015 and is headquartered in San Jose, California.

Napco Security Technologies, Inc. develops, manufactures, and sells electronic security products in the United States and internationally. The company offers access control systems, door-locking products, intrusion and fire alarm systems, and video surveillance systems for commercial, residential, institutional, industrial, and governmental applications. Its access control systems include various types of identification readers, control panels, PC-based computers, and electronically activated door-locking devices; and door locking devices comprise microprocessor-based electronic door locks with push button, card readers and bio-metric operation, door alarms, mechanical door locks, and simple dead bolt locks. The company's alarm systems include automatic communicators, cellular communication devices, control panels, combination control panels/digital communicators and digital keypad systems, fire alarm control panels, and area detectors; and video surveillance systems comprise video cameras, control panels, video monitors, or PCs. It also buys and resells various identification readers, video cameras, PC-based computers, and various peripheral equipment for access control and video surveillance systems; offers school security products; and markets peripheral and related equipment manufactured by other companies. The company markets and sells its products to independent distributors, dealers, and installers of security equipment. Napco Security Technologies, Inc. was founded in 1969 and is headquartered in Amityville, New York.