AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company, the largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications. Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue. As of 2018, AT&T is ranked #9 on the Fortune 500 rankings of the largest United States corporations by total revenue.

Develops computer and storage systems, high-speed microprocessors and software solutions for computer networking

Nortel Networks has hung up on the telecom sector. Once one of the largest makers of telecommunications equipment in North America, it filed for bankruptcy protection in 2009 and is in the process of liquidating its assets. The company made core network switching, wireless, and optical systems for network operators. Its wireline and enterprise network equipment included systems for digital voice and data switching, routing, and call center communications. Wireless products included cellular base stations and controllers. The company also made such long-haul fiber-optic products as multiplexers. Nortel is currently focused on selling off its remaining businesses and intellectual property and winding down all operations. Today, Nortel's Metro Ethernet Networks segment provides carrier Ethernet switching, optical networking, and multi-service switching products.

International Business Machines Corp. is an information technology company, which engages in the provision of integrated solutions that leverage information technology and knowledge of business processes. It operates through the following segments: Software, Consulting, Infrastructure, Financing, and Other. The Software segment combines hybrid cloud platform and software solutions to help clients become more data-driven, and to automate, secure, and modernize their environments. The Consulting segment focuses on integrating skills on strategy, experience, technology and operations by domain and industry. The Infrastructure segment offers solutions for hybrid cloud, and is the foundation of the hybrid cloud stack. Infrastructure is optimized for infusing AI into mission-critical transactions and tightly integrated with IBM Software including Red Hat for accelerated hybrid cloud benefits. The Financing segment refers to the client and commercial financing, facilitating IBM clients’ acquisition of IT systems, software, and services. The company was founded by Charles Ranlett Flint and Thomas J. Watson Sr. on June 16, 1911 and is headquartered in Armonk, NY.

Giesecke+Devrient (G+D) is a multinational security technology company based in Munich, Germany. G+D's solutions protect the world's essential values as a dependable partner for international customers with the highest standards. With passion and precision, the company creates customized technology in four core areas: payment, connectivity, identities, and digital infrastructures. G+D was established in 1852. With approximately 11,800 employees, the company generated sales of 2.38 billion euros in fiscal 2021. G+D has 89 subsidiaries and joint ventures in 33 countries.

Nanjing Nari Information Communication Tech Co. Ltd., a subsidiary of NARI Technology Co., Ltd., is a Chinese company. The firm operates research and development center for energy sector.

NARI Group Corp. is a high technology research institute in China. The company offers bulk power system control technology innovation to original theoretical research results and patents. It was founded on February 27, 1993 and It is headquartered in Nanjing, CN.

IdenTrust, Inc. provides digital identity authentication solutions to the financial institutions, government agencies, corporations, department of defense, energy, and supply chain markets internationally. Its solutions include PLOT, policies, legal framework, operations hosting, and technology, a rule set for identity authentication that ensures identities are issued, validated, and utilized in a standardized way inside and outside a financial institution. The company also provides HUB, a hosted operational identity infrastructure that minimizes the risk of online fraud and identity theft without having to invest in creating and maintaining identity framework and policies; Participant Network, a member based community of financial institutions in which members follow the same set of rules on the identity vetting, administration, validation, certificate manufacturing, and storage; and Trust Prime that enables corporate treasurers to use a single universal identity authentication standard to authenticate multiple bank accounts.

Jiangsu Electric Power Co. is a state-owned electric company that is mainly engaged in the constructions, management, sales & maintenance of pwer grids. The company also handles the construction, building, research, management & power-related design of electric companies within Jiangsu Province. The company was founded in December, 1988 and is headquartered in Jiangsu, CN.

Rockstar Consortium US LP operates as an intellectual property (IP) licensing company. The company is headquartered in Plano, TX.

China Mobile Communications Group Co., Ltd. provides basic telecommunications services. It also offers value-added telecommunications, Internet audiovisual programs, mobile television distribution, and Internet protocol television transmission services. Its business activities include radio and television program production and operation, management of system integration, roaming settlement and clearing, technology development, technical services, and advertising. The company was founded on July 22, 1999 and is headquartered in Beijing, China.

SGCC was founded on Dec. 29th, 2002 as a pilot state-owned corporation by the State Council. As a backbone state-owned enterprise that may affect national energy safety and economic lifelines, SGCC's core business is to build and operate power grids and provides secure and reliable power supply for the development of the society. With a registered capital of RMB 200 billion yuan and service area covering 26 provinces,autonomous regions and municipalities directly under the jurisdiction of the Central Government which equals to 88% of the national territory. SGCC carries out the president responsibility system. The president is the legal corporate representative of SGCC. By the end of 2005, SGCC accumulated a total asset of RMB1176.7 billion yuan with a debt-asset ratio of 61.96%, and possessed 195,899 km of 220kV and above transmission lines with a transforming capacity up to 616.64 GVA. SGCC has 1.502 million employees and serves 128 million customers. In 2005, SGCC sold electric power up to 1464.6 TWh and achieved an operation income of RMB 721.4 billion yuan with a net profit of RMB14.4 billion yuan profit & tax of RMB 60.4 billion yuan. SGCC was ranked the 40th in the Fortune Global 500 in 2005.

Jiangsu Hengqin Technology Co., Ltd., established on 2018-05-07, Business scope includes computer information technology,Network technology development,technical consulting,Technical Services,technology transfer;software development,Sales.Retailing of computer software, hardware and auxiliary equipment;Wholesale of computer software, hardware and auxiliary equipment;Manufacturing of computer software, hardware and peripheral equipment;Communication equipment manufacturing;Intelligent Instrument Manufacturing(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Giesecke + Devrient Mobile Security GmbH provides security products and solutions for mobile applications, particularly in the fields of telecommunications and electronic payment transactions. It offers G+D currency technology, G+D mobile security, veridos, and secunet. The company is headquartered in Munich, Germany.

Zions Bancorporation engages in the provision of banking and related services and offers commercial, retail banking and mortgage lending products & services. Its products involves personal banking services to individuals, including home mortgages, bankcard, other installment loans, home equity lines of credit, checking accounts, savings accounts, certificates of deposit of various types and maturities, trust services, safe deposit facilities, direct deposit, and Internet & mobile banking. The company was founded in April 1955 and is headquartered in Salt Lake City, UT.

Rakuten Group, Inc. engages in the business of Internet services. It operates through the following segments: Internet Services, FinTech, and Mobile. The Internet Services segment manages e-commerce (EC), online cash-back, travel booking, and portal and digital content sites. The FinTech segment provides services over the Internet related to banking and securities, credit cards, life insurance, and electronic money. The Mobile segment manages messaging and communication services and sale of mobile devices. The company was founded by Hiroshi Mikitani on February 7, 1997 and is headquartered in Tokyo, Japan.

Part of Giesecke+Devrient GmbH, Giesecke & Devrient India Pvt Ltd. is an Indian company located in Gurgaon that manufactures cards. It was founded in 2001.