ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR RoHS stands for Restriction of Hazardous Substances. RoHS, also known as Directive 2002/95/EC, originated in the European Union and restricts the use of specific hazardous materials found in electrical and electronic products (known as EEE). All applicable products in the EU market after July 1, 2006 must pass RoHS compliance. The substances banned under RoHS are lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (CrVI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and four different phthalates (DEHP, BBP, BBP, DIBP). RoHS You can spend more time running your business and less time concerned with IT when you have Windows 10 Pro. Build-in security, enhanced productivity features, and easy-to-implement management tools provide an essential foundation to keep your business humming. Windows 10 Pro 联想 ThinkPad E590, 39.6 cm (15.6"), 8 GB, DDR4-SDRAM, Windows 10 Pro, 黑色 联想 ThinkPad E590. 产品类型: 笔记本, 外型: 翻盖式. 显示器尺寸（对角长）: 39.6 cm (15.6"). 内置存储器: 8 GB, 内存类型: DDR4-SDRAM. 已预装操作系统: Windows 10 Pro. 产品色彩: 黑色. 重量: 2.12 kg