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Cemtrex, Inc. operates as a technology company in the United States and internationally. It operates through Security, Industrial Services, and Cemtrex Corporate segments. The company offers browser-based video monitoring and analytics-based recognition systems, cameras, servers, and access control systems for security and surveillance in industrial and commercial facilities, federal prisons, hospitals, universities, schools, and federal and state government offices; and provides critical security and video surveillance solutions utilizing artificial intelligence based data algorithms. It also provides services for rigging, millwrighting, in plant maintenance, equipment erection, relocation, and disassembly; installs high precision equipment in various industrial markets comprising automotive, printing and graphics, industrial automation, packaging, chemicals and others; and provides maintenance and contracting solutions for the machinery, packaging, printing, chemical, and other manufacturing markets. The company was formerly known as Diversified American Holding, Inc. and changed its name to Cemtrex, Inc. in December 2004. Cemtrex, Inc. was incorporated in 1998 and is headquartered in Brooklyn, New York.

Infobird Co., Ltd, through its subsidiaries, operates as a software-as-a-service (SaaS) provider of artificial intelligence (AI) enabled customer engagement solutions in the People's Republic of China. The company offers customer relationship management cloud-based services, such as SaaS and business process outsourcing services to its clients. It also provides AI-powered cloud-based sales force management software, including intelligent quality inspection and intelligent training software to enable its clients to monitor, benchmark, and enhance the performances of agents; consumer product and retail store digitalization solutions; and other services, including software license selling, data analysis, and other professional services. The company serves corporate clients in the finance, education, public services, healthcare, and consumer products industries. Infobird Co., Ltd was founded in 2001 and is based in Beijing, the People's Republic of China.

Powerbridge Technologies Co., Ltd. provides software application and technology solutions and services primarily in China. It offers Powerbridge Digital Solutions that include Trade Enterprise and Trade Compliance, as well as Import & Export Loan and Insurance Processing for customers to streamline their trade operations, trade logistics, and regulatory compliance. The company also provides Powerbridge Software-as-a-Service solutions, which comprise Logistics Service Cloud and Trade Zone Operations Cloud, as well as Inward Processed Manufacturing Cloud, Cross-Border eCommerce Cloud, and Import & Export Loan; and Powerbridge Blockchain-as-a-Service solutions that include Compliance Blockchain and Supply Chain Blockchain Services. It serves international trade businesses and manufacturers, customs and government agencies and authorities, and logistics service and other providers. The company sells its solutions and services through its direct sales organization, indirect channel partners, and strategic government partners. Powerbridge Technologies Co., Ltd. was founded in 1997 and is headquartered in Zhuhai, China.

Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems in North America, Asia, and internationally. The company offers optical and industrial sapphire products in various shapes and sizes, including sheets, rods, tubes, core, ingots, and prisms for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It serves defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is based in Bensenville, Illinois.