Google is your friend:
Guido Rayos X, S.A.
Address: Salcedo, 5
City: Madrid
Country: Spain
Zip Code: 28034
Corporate Phone: +34 91 358 1625
Corporate Email: guidorx@tc-o.com
Fax: +34 91 358 0869
By the time you had typed this post you could have done what I just did - Googled the name.
Robert