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 E means that the product is rated in its category in terms of energy efficiency. The Energy Labeling system is based on EU Regulation 2017/1369/EU. E 戴尔 SE2222H, 54.5 cm (21.4"), 1920 x 1080 像素, Full HD, 液晶显示, 12 毫秒, 黑色 戴尔 SE2222H. 显示器尺寸（对角长）: 54.5 cm (21.4"), 显示器分辨率: 1920 x 1080 像素, HD 类型: Full HD, 显示技术: 液晶显示, 响应时间: 12 毫秒, 原机长宽比: 16:9, 视角，水平: 178°, 视角，垂直: 178°. VESA 安装支架. 产品色彩: 黑色