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| 24th
August 2013: Photo album redesigned (Coppermine) and blog added.  | 
| 21st March 2010: PHP-Scripts with email functions and for test of browser capability. Consolidation of favorites with list of links together with numerous updates.  | 
| 15th Novemver 2009: User registration ond logon for xchem.de realized with PHP 5 script and SQL database. Domain transfer and bundling of chemistry related content in xchem.de  | 
| 2nd
August 2008: PHP 5 script for email function on page "contact". Subdomain "Im-Gleichschritt-Marsch".  | 
| 28th October 2007: JavaScript supported interactive color chart in xChem. Iceland added to Album.  | 
| 19th
April 2004: Archive created.  | 
| 13th
March 2003: Newsletter No. 1/2003: Transfer to Korea. (password protected)  | 
| 10th
August 2002: Chapter "Publications" completed. Inner Mongolia and Chinese Jilin province in "My Photo Album".  | 
| 03rd
February 2002: Two more sections in My Photo Album: "My Working Place" (password protected) and "Northeast China"  | 
| 10th
November 2001: Publications (dissertations for diploma and doctor degree) added.  | 
| 26th
August 2001: Page for "Tianjin Links" new designed. (last updated in 2003; meanwhile in archive)  | 
| 12th
August 2001: Whole page bilingual (English/German) available.  | 
| 30th
July 2001: Photo album created. 4 pages for Silk road tour added.  | 
| 20th
July 2001: 5 pages with photos of Tibet tour 2001 active.  | 
| 4th
July 2001: Domains xchem.de and ws62.com are online.  | 
| 22nd
May 2001: Transfer of the site to its own domain www.schaeferwo.de (hosted by 1&1 Puretec, Karlsruhe). All pages new designed.  | 
| 21st
November 2000: Homepage hosted by Heim.At (stadt.heim.at/berlin/110010/) and Crosswinds (www.crosswinds.net/~schaeferwo/). The site consisted of only three pages. Both addresses are meanwhile deactivated.  | 
| 24th
August 1999: First homepage "Small Planet Page" created with template on MSN community (homepages.msn.com/PassportPl/schaeferwo/index.html). The page is meanwhile deactivated.  |