Religious Travelers - klm kosher meal hechser

Does anyone know what hechser klm uses on its ams-dtw flight? Thanks

Local AMS hechsher (which I avoid).

KLM Kosher meals are excellent. No two-week old flown-in packages, but mostly fresh, imaginative food, specially 'designed' for KLM and in the same nice, 'normal' design KLM trays as other meals - so that you're not drawing attention as the only person with a crackling screeching, thin white disposable box. I would prefer them over, say, Stogel boxes any day! Expect Dutch-style food though.

Meals are prepared by Langerhuize, who are connected to a Jewish nursing home and (obviously) have a separate kitchen: http://www.langerhuize.nl/Content/index.php?ENG