CE认证机构完整官方列表
European Union Notified Bodies official list. Always refer to the original -updated- list to check: which lab or companies is
搜索
Search engines and search tools, from the most famous ones to very specialized. Note that standards and regulations search have their dedicated “Standards” category and therefore not included here.
Thingiverse 免费 3D 模型
Biggest library of free 3D models on this planet (universe?). Check the copyright however for commercial usages. Thingiverse functions as
知识共享/CC搜索
Search over the Creative Common partners for free content, mainly images (more than 500 million!). Only two initial options: can
Pexels 免费图片
Millions of pictures. Check the license, but at time of writing: free to use no attribution required (but possible and
Pixabay 免费图片（以及视频和音乐）
2.3+ millions of royalty free images, movies and sounds. A must for any website or graphic user. Is sponsored by
Everypixel 图片元搜索
Not only does it search across 50+ images libraries and agencies in one go, but it provides very convenient combinable