» https://www.stoe.com/
A pioneer in powder and single crystal X-ray diffraction since the 1960’s
» https://ets-didactic.de/hp2/Home.htm
Covering mechanical engineering, mechatronics, metal sectors, electronics, smart home, etc.
» http://www.extech.com/
Since 1971, Extech Instruments has focused on Test and Measurement tools built for the professionals