The letters ‘CE’ appear on many products traded on the extended Single Market in the European Economic Area (EEA). They signify that products sold in the EEA have been assessed to meet high safety, health, and environmental protection requirements. When you buy a new phone, a teddy bear, or a TV within the EEA, you can find the CE mark on them. CE marking also supports fair competition by holding all companies accountable to the same rules. CE marking is a part of the EU’s harmonisation legislation, which is mainly managed by Directorate-General for Internal market, Industry, Entrepreneurship and SMEs. The CE marking for Restriction of Hazardous Substances is managed by Directorate-General for Environment. Comprehensive guidance on the implementation of EU product rules can be found in the so-called Blue Guide. CE AOC 22B40HM, 54.5 cm (21.4"), 1920 x 1080 像素, 4 毫秒, 黑色 AOC 22B40HM. 显示器尺寸（对角长）: 54.5 cm (21.4"), 显示器分辨率: 1920 x 1080 像素, 响应时间: 4 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