Hi! What means high res? Up to 100 ohmcm.is CZ over 100 ohmcm is FZ and this one is very expensive. We ,at Ultrasil Corporation are doing up to 100.ohmcm. Over ask Wacker in Germany or SEH in Japan or any brokers . They may have small qty. John Dancovich 3527 Breakwater Ave Hayward CA 94545 Phone: 510-266-3700 Fax: 510-266-3720 e-mail: ultrasil@aol.com