Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.

The Hewlett-Packard Company was an American multinational information technology company headquartered in Palo Alto, California.

Dell Inc. is an American privately owned multinational computer technology company based in Round Rock, Texas, United States, that develops, sells, repairs, and supports computers and related products and services.

Fujitsu Ltd., commonly referred to as Fujitsu, is a Japanese multinational information technology equipment and services company headquartered in Tokyo, Japan.

ASUSTeK Computer Inc., (stylized as ΛSUS) is a Taiwanese multinational computer hardware and electronics company headquartered in Beitou District, Taipei, Taiwan.

Toshiba Corporation is a Japanese multinational conglomerate corporation headquartered in Tokyo, Japan.

Lenovo Group Ltd. is a Chinese multinational technology company with headquarters in Beijing, China, and Morrisville, North Carolina, United States.

Acer Inc. is a Taiwanese multinational hardware and electronics corporation specializing in advanced electronics technology and is headquartered in Xizhi, New Taipei City, Taiwan.

Samsung is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. Its primary products are apparel, chemicals, consumer electronics, electronic components, medical equipment, semiconductors, ships, telecommunications equipment.

Sony Corporation, commonly referred to as Sony, is a Japanese multinational conglomerate corporation headquartered in Kōnan Minato, Tokyo, Japan.