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Cosmos Air Purification, based in Hyattsville, MD, has been a leader in the air filtration industry since 1996, specializing in innovative, reliable, and sustainable filtration solutions. The company is dedicated to improving indoor air quality and offers a comprehensive range of eco-friendly air purification products tailored to meet diverse HVAC requirements. With a commitment to quality and sustainability, Cosmos Air Purification serves a variety of notable projects, including the World Bank Headquarters and the Pentagon, emphasizing their role in promoting environmental health. Their expert services include custom filter manufacturing, changeout services, and personalized assessments to ensure optimal air quality for their clients. Generated from the website

Founded in 1998, Sigma Space Corporation provides optoelectronic aerospace instruments for NASA and commercial customers. It offers products for remote sensing and defense applications. The company also supplies optical and electronic subsystems, as well as design services for government clients. Sigma Space Corporation has three divisions that provide aerospace hardware, commercial products, and science and engineering services. In addition, it offers program and risk management, software and network administration services. The company has optical and electronic laboratories and fiber splicing and assembly areas. Sigma Space Corporation also has a computer-controlled machine shop. It provides system analysis and development, fabrication, mechanical design and integration services. Sigma Space Corporation is located in Lanham, Md.