Challentech specializes in cryogenics vacuum business since 1989 and committes to providing the finest parts, on time delivery and excellent service support to our customers. We offer: ●Superior rebuilding service for Brooks /CTI-cryogencis cryopump and compressor ●Superior refurbished service for Sumitomo / Ulvac cryopump ●Provide high quality cryopump service kits & related accessories ●Used / Refurbished cryopump units sales business ●OEM system upgrade and retrofit |