Original diagrams and practical tools
Added six citable original technical diagrams, article and social image metadata, a bilingual history topic, and three interactive tools for classification, product evidence and installation handover; added primary images to Article markup and updated the version.
Authority and transparency release
Added editorial-team, disclosure and revision pages; added original verification matrices and technical synthesis to ten cornerstone topics; expanded Article markup with author URL, citations, section, word count and version; qualified the sitewide Oscar link with sponsored and nofollow.
Initial public release
Published the bilingual topic library, glossary, source register, international standards map, search, canonical links, hreflang, structured data, robots and sitemap.
Correction policy
An error that changes a principal conclusion, scope or safety boundary is corrected in the article and logged here. Spelling, formatting and meaning-preserving edits are not itemized. When a source link fails, the team first seeks a replacement from the same issuing organization rather than a low-quality repost.