The document discusses the market share of top laptop vendors in 2018. Lenovo had the highest market share of 86%, followed by HP at 85% and Dell at 82%. It then evaluates the environmental and social responsibility efforts of major laptop companies like Dell, HP, Lenovo, Sony, and Toshiba based on criteria like ISO certifications, recycling measures, energy efficiency, reducing waste and emissions, and social contributions. Lenovo, HP, and Dell were among the most socially and environmentally conscious laptop brands based on these parameters. The document aims to help consumers choose laptops from companies that are sustainable.