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Advent Technologies Holdings, Inc., an advanced materials and technology development company, operates in the fuel cell and hydrogen technology markets in North America, Europe, and Asia. It develops, manufactures, and assembles fuel cell systems and critical components that determine the performance of hydrogen fuel cells and other energy systems. The company offers high-temperature proton exchange membrane (HT-PEM) fuel cells, including membrane electrode assemblies, bipolar plates, and reformers, as well as provides fuel-cell stack assembly and testing services. It serves stationary power, portable power, automotive, aviation, energy storage, and sensor markets. The company is headquartered in Boston, Massachusetts.

CBAK Energy Technology, Inc., together with its subsidiaries, manufactures and sells lithium batteries in Mainland China, the United States, Europe, and internationally. Its products are used in various applications, including electric vehicles, such as electric cars, electric buses, and hybrid electric cars and buses; light electric vehicles that include electric bicycles, electric motors, and sight-seeing cars; and electric tools, energy storage, uninterruptible power supply, and other high power applications, as well as cordless power tools. The company was formerly known as China BAK Battery, Inc. and changed its name to CBAK Energy Technology, Inc. in January 2017. CBAK Energy Technology, Inc. was incorporated in 1999 and is based in Dalian, China.

Eos Energy Enterprises, Inc. designs, manufactures, and markets zinc-based energy storage solutions for utility-scale, microgrid, and commercial and industrial (C&I) applications in the United States. The company offers Znyth technology battery energy storage system (BESS), which provides the operating flexibility to manage increased grid complexity and price volatility. Its flagship product is Gen 2.3 battery module. In addition, the company offers Z3 battery module that provides utilities, independent power producers, renewables developers, and C&I customers with an alternative to lithium-ion and lead-acid monopolar batteries for critical 3- to 12-hour discharge duration applications; battery management system, which provides a remote asset monitoring capability and service to track the performance and health of BESS and identify future system performance issues through predictive analytics; and project management and commissioning services, as well as long-term maintenance plans. Eos Energy Enterprises, Inc. is headquartered in Edison, New Jersey.

Sono-Tek Corporation designs and manufactures ultrasonic coating systems for applying on parts and components for the microelectronics/electronics, alternative energy, medical, industrial, and research and development/other markets worldwide. The company also designs and manufactures custom-engineered ultrasonic coating systems; and provides nozzles and generators for manufacturers' equipment. Its products include integrated multi-axis coating systems, integrated coating systems, fluxing systems, OEM systems, and other related systems. In addition, the company provides surface coating solutions and application consulting services. It markets and distributes its products through direct sales personnel, select independent distributors, and sales representatives. The company was incorporated in 1975 and is based in Milton, New York.