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Sapphire is a Graphics card producer that can be used in mining alternative crypto currencies such as Ethereum and Litecoin. SAPPHIRE Technology is a leading manufacturer and global supplier of innovative components and solutions for PC systems for both consumer and professional applications. From its origins in the design and manufacture of state-of-the-art graphics add-in boards, the extensive SAPPHIRE product range has grown to include a broad range of professional and embedded products. Founded in 2001, SAPPHIRE is a privately held global company headquartered in Hong Kong.

Cyberian Mine GmbH is a German-Russian joint venture cryptocurrency mining company. It provides mining hostage services for its clients with an electricity cost of €0.03/kWh, achieved by green hydro-power stations, with free natural cooling in Siberia’s low ambient temperature. At Cyberian Mine, the user can choose to buy a mining device from them directly or send its own mining device to perform the host mining service.

Sesterce, is a grouping by acquisition or alliance of several major players in blockchain in Europe. With the intention of creating a global player and a real representative of Europe on this market. Sesterce's (previously known as Bitech Mining) mining department offers the user a wide range of miners. The group has developed a blockchain mining expertise and investment during these last years and it has one of the biggest catalogues of services around mining.