Kockum Sonics AB Train whistles. Air driven as well as electronic whistles for all types of rolling stock. KontaktCompany name:Kockum Sonics ABAddress:Box 1035Zip code & City:SE-212 10 MALMÖCountry:SWEDENHomepage:www.kockumsonics.comPhone number:+ 46 40 671 88 00 Fax:+46 40 21 65 13Contact person:Thomas SundquistE-mail:thomas.sundquist@kockumsonics.com