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China Telecom Corporation Limited, together with its subsidiaries, provides wireline and mobile telecommunications services primarily in the People's Republic of China. It offers wireline voice services, including local wireline telephone services and long distance wireline services; CDMA mobile voice services, such as local calls, domestic and international long distance calls, intra-provincial roaming, and inter-provincial roaming and international roaming; wireline Internet access services comprising dial-up and broadband services; wireless Internet access services; and wireline, Internet, and mobile value-added services. The company also provides Best Tone information services; and information technology-based integrated solutions, such as system integration and consulting, outsourcing, special advisory, information application, knowledge, and software development services. In addition, it offers managed data services that include digital data network, frame relay, and asynchronous transfer mode services for government agencies, large corporations, and institutions; and leased line services, as well as sells, repairs, and maintains customer-end equipment. Further, the company provides international telecommunications services, including network, Internet access and transit, Internet data center, and mobile virtual network services in various countries, including the Asia Pacific, Europe, Africa, South America, and North America; and music production and related information, instant messenger, finance leasing, capital and financial management, and e-commerce services, as well as sells telecommunications terminals. As of December 31, 2019, it had approximately 336 million mobile subscribers; 153 million wireline broadband subscribers; and 111 million access lines in service. The company was incorporated in 2002 and is based in Wanchai, Hong Kong. China Telecom Corporation Limited is a subsidiary of China Telecommunications Corporation.

SentinelOne, Inc. operates as a cybersecurity provider in the United States and internationally. Its Singularity Platform delivers an artificial intelligence-powered autonomous threat prevention, detection, and response capabilities across an organization's endpoints, cloud workloads, and identify credentials, which enables seamless and autonomous protection against a spectrum of cyber threats. In addition, it offers endpoint protection, endpoint detection and response, cloud and identity security, attack surface management, mobile endpoint security, xdr power tools, watchtower, and vigilance MDR. The company was formerly known as Sentinel Labs, Inc. and changed its name to SentinelOne, Inc. in March 2021. SentinelOne, Inc. was incorporated in 2013 and is headquartered in Mountain View, California.

Singapore Telecommunications Limited, together with its subsidiaries, provides telecommunication services to consumers and small businesses in Singapore, Australia, the United States, and internationally. The company operates through Optus, Singapore Consumer, Group Enterprise, NCS, Trustwave, and Amobee segments. The company provides mobile, pay television, fixed broadband, voice, and content and digital services, as well as equipment sales; digital media and advertising services; and fixed voice and data, satellite, managed services, ICT, cloud computing, and cybersecurity solutions, as well as professional consulting services. It also offers 5G, roaming, and Singtel super stacker services; smart homes, WiFi mesh, WiFi 6, and home priority plan solutions; insurance, smart network, dash, Singtel paylater, and telephony services; TV packs, DVR set top boxes, TV GO, music, newsstand, and cast services; mobile phones; and devices and gadgets, such as wearables, TV, audio, home office essentials, gamic products, home appliances, and phone accessories. In addition, the company provides 5G, mobility, and connectivity services; Singtel Liquid-X and managed network services; cloud services, data center services, and software-as-a service; Internet of Things; voice, unified communications, managed unified communications, cloud conferencing, international calling, and SIP trunking services; and TV services. The company was incorporated in 1992 and is headquartered in Singapore.

Telefónica, S.A., together with its subsidiaries, provides telecommunications services in Europe and Latin America. The company offers mobile and related services and products, such as mobile voice, value added, mobile data and internet, wholesale, corporate, roaming, fixed wireless, and trunking and paging services. It also provides fixed telecommunication services, including PSTN lines; ISDN accesses; public telephone services; local, domestic, and international long-distance and fixed-to-mobile communications; corporate communications; supplementary value-added services; video telephony; intelligent network; and telephony information services, as well as leases and sells handset equipment and telephony information services. It also provides Internet and broadband multimedia services comprising internet service provider, portal and network, retail and wholesale broadband access, narrowband switched access, security, internet through fibre to the home, and voice over internet protocol services. In addition, the company offers leased line, virtual private network, fibre optics, web hosting and application, managed hosting, content delivery, outsourcing and application, desktop, and system integration and professional services. Further, the company offers wholesale services for telecommunication operators, including domestic interconnection and international wholesale services; leased lines for other operators; and local loop leasing services, as well as bit stream services, wholesale line rental accesses, and leased ducts for other operators' fiber deployment. Additionally, it provides video/TV services; smart connectivity and services, and consumer IoT products; financial and other payment, security, cloud, advertising, big data, and digital experience services; Aura; open gateway, living apps; smart Wi-Fi, Phoenix, NT, Solar 360, and Movistar Home devices. Telefónica, S.A. was incorporated in 1924 and is headquartered in Madrid, Spain.

Vivendi SE operates as an entertainment, media, and communication company in France, the rest of Europe, the Americas, Asia/Oceania, and Africa. It operates through Canal+ Group, Lagardère, Havas, Prisma Media, Gameloft, Vivendi Village, New Initiatives, and Generosity and Solidarity segments. The Canal+ Group segment publishes and distributes premium and thematic pay-TV and free-to-air channels; and produces, sells, and distributes movies and TV series. The Lagardère segment engages in the publishing, media, and travel retail activities. The Havas segment includes communications disciplines, such as creativity, media expertise, and healthcare/wellness. The Prisma Media segment publishes French magazines and online videos. The Gameloft segment engages in the creation and publishing of downloadable video games for various console-PC-mobile platforms, tablets, triple-play boxes, and smart TVs. The Vivendi Village segment provides ticketing services and live performances through Olympia production, festival production, and venues. The New Initiatives segment operates Dailymotion, a video content aggregation and distribution platform, as well as develops ultra-high-speed Internet service. The Generosity and Solidarity segment operates CanalOlympia; and Vivendi Foundation, a Create Joy solidarity program, which supports initial and professional training projects. The company was founded in 1853 and is headquartered in Paris, France.