According to Industry Week's 1,000, the top five manufacturing companies in the world in 2015 are based in the oil and chemical products industries. Ranked by gross annual revenue, the top five for 2015 included China Petroleum & Chemical Corporation, Shell, Exxon Mobil, Petro China and British Petroleum.
With a revenue of over $455 billion in 2014, the China Petroleum and Chemical Corporation (commonly referred to as "Sinopec") topped the list of the world's largest public manufacturing companies.
Other companies that made it to the top 10 of the list included automobile manufacturing giants Toyota and Volkswagen, as well as Switzerland's Glencore, which manufactures primary metals.
The largest manufacturers of consumer electronics are Apple and Samsung. In 2015, these two giants ranked 12th and 13th respectively in Industry Week's 1,000. Forbes ranked them in the 12th and 18th positions respectively in its list of the 2,000 largest companies in the world, which also includes corporations from sectors other than manufacturing.
Rankings may differ by source due to differences in the way Forbes, Industry Week and other publications compile their data. Industry Week's 1,000 was compiled based on publicly available data on revenue from 2014. In contrast, Forbes takes into account statistics on sales, profits, assets and market value to generate a more balanced ranking of companies.