IBM is an American multinational technology and consulting corporation that manufactures and markets computer hardware, middleware, and software, and offers infrastructure, hosting, and consulting services in areas ranging from mainframe computers to nanotechnology. IBM is intent on leading the development of a global data field.

Microsoft develops, manufactures, licenses, supports and sells computer software, consumer electronics and personal computers and services. Its best known software products are the Microsoft Windows line of operating systems, Microsoft Office office suite, and Internet Explorer and Edge web browsers.Year Founded: 1975Revenue: $93.6 billion (2014)NASDAQ: MSFT

Accenture is a leading professional service company, providing consulting and outsourcing services through their strategy, digital, technology and operations capabilities.

China Telecommunications Corporation known as its trading name China Telecom is a Chinese state-owned telecommunication company. It is the largest fixed-line service and the third largest mobile telecommunication provider in China.With the world’s largest broadband Internet network and a leading-edge mobile communications network, China Telecom is capable of providing cross-region, fully-integrated information services, and a sound customer service channel system to global customers. Today, the company has become the largest LTE-FDD 4G operator, optical broadband operator, IPTV operator, and fixed-line telephone operator in the world. Up to now, our users of diversified services total 700 million.China Telecom owns has three listed companies: China Telecom Corporation Limited (Chinese: 中国电信股份有限公司), China Communications Services Corporation Limited (Chinese: 中国通信服务股份有限公司) and Besttone Holding Co., Ltd. (Chinese: 号百控股股份有限公司).As the main force for building a cyber power, digital China and smart society, a forerunner in supply-side reform in the fields of Cloud Computing, big data, and Artificial Intelligence, and a provider of network infrastructure, China Telecom will make new achievements in a new era.

As the leading telecommunications services provider in Mainland China, the Group provides full communications services in all 31 provinces, autonomous regions and directly-administered municipalities throughout Mainland China and in Hong Kong Special Administrative Region, and boasts a world-class telecommunications operator with the world's largest network and customer base, a leading position in profitability and market value ranking.Its businesses primarily consist of mobile voice and data business, wireline broadband and other information and communications services.As of 31 December 2018, the Group had a total of 459,152 employees, and a total connection of 1.633 billion, with its annual revenue totalling RMB736.8 billion.