美洲
Crest Ultrasonics, Trenton NJ  ( Headquater * ) Phone: (609) 883-4000 Fax: (609) 883-6452 http://www.crest-ultrasonics.com/	Closed Loop Water Systems, FL Phone: (954) 748-2278 Fax: (954) 748-9681 http://www.clwsystems.com/	Forward Technology, MN Phone: (763) 559-1785 Fax: (763) 559-3929 http://www.forwardtech.com/
Piezo Kinetics, Inc., PA Phone: (814) 355-1593 Fax: (814) 355-4342 http://www.piezo-kinetics.com/	Uthe Technology Inc. Milpitas, CA Phone: (408) 945-8843 Fax: (408) 945-8907 http://www.uthe.com/
亚洲
Crest Ultrasonics Malaysia Phone: 604-507-0018 Fax: 604-507-0020 http://www.crestm.com/	Crest Ultrasonics Singapore Phone: 65-741-8266 Fax: 65-741-1939	Crest Ultrasonics Thailand Phone: 662-682-6506 Fax: 662-682-6507
Crest Ultrasonics Philippines Phone: 632 807-0972 Fax: 632-807-0984 http://www.crest-phil.com/	Uthe Technology, Japan Phone: 65-252-2072 Fax: 81-45-912-7921	Uthe Technology, Singapore Phone: 81-45-912-7911 Fax: 65-253-6305 http://www.worldyellowpages.com/uthe/
FTI Shen Zhen, China Phone : 86-755-887-8844 Fax : 86-755-887-7159	FTI Hong Kong, China Phone : 85-22-416-2263 Fax : 85-22-416-1805
欧洲
Martin Walter AG, Germany Phone: 49-708-279-1501 Fax: 49-708-279-1515 http://www.walter-ultraschall.de/	Rinco Ultrasonics AG, Switzerland Phone: 41-071-466-41-00 Fax: 41-071-466-41-02 http://www.rincoultrasonics.com/	CC Hydrosonics LTD., UK Phone: 44-1279-418942 Fax: 44-1279-453926 http://www.cchydrosonics.com/
FTI Mecasonic, France Phone : 33-4-50-87-73-00 Fax : 33-4-50-37-31-47 http://www.mecasonic.com/	FTI Luton, UK Phone : 44-1582-429335 Fax : 44-1582-450359 http://www.forwardtechuk.co.uk/	FTI KLN, Germany Phone : 49-6252-140 Fax ; 49-6252-14277 http://www.kln.de/