| FS Manufacturing Co., Ltd.( Tokyo ) | FSN, LLC ( Manchester, NH ) | FSR Patented Technologies, Ltd. ( Las Vegas, NV ) |
| FS Networks, Inc. ( Seattle, WA ) | FSNC, LLC ( Tucson, AZ ) | FSSL Limited ( Ellon, GB6 ) |
| FSH Industries, LLC. ( Miami Springs, FL ) | fSONA Communiations Corporation | FSSL, Inc. ( Sugar Land, TX ) |
| FSI | fSONA Communications Corporation | FSSL, Inc. ( Sugarland, TX ) |
| FSI Company ( Hillsboro, OR ) | Fsona Communications Corporation( Vancouver ) | FSSL, Incorporated ( Melbourne, AU ) |
| FSI Corporation ( Chaska, MN ) | FSP Fluid Systems Partners Holding AG ( Baar, CH ) | FSU Research Foundation Inc. |
| FSI International ( Allen, TX ) | FSP INSTRUMENTS, INC. ( Hoboken, NJ ) | FSU Research Foundation, Inc. |
| FSI International, Inc. ( Chaska, MN ) | FSP Management AB ( Klippan, SE ) | FSU Research Foundation, Inc. ( Tallahassee, FL ) |
| FSK Inc. ( Aichi, JP ) | FSP TECHNOLOGY INC. | FSW Design |
| FSK, Inc. ( Aichi, JP ) | FSP Technology Inc.( Taoyuan ) | FSX, Inc. ( Granite Falls, WA ) |
| FSL Electronics P/L( Cranbourne ) | FSP Technology Inc. ( Taoyuan, Taoyuan Hsien ) | FT Far East Limited( Hong Kong ) |
| FSL Electronics Pty Ltd.( Cranbourne ) | FSP Technology Inc. ( Taoyuan, TW ) | FT INNOVATIONS (FTI) B.V. ( Boxmeer, NL ) |
| FSL Electronics Pty. Ltd. ( Carnbourne, AU ) | FSP Technology Inc.( Taoyuan Hsien ) | FT Interactive Data Corporation ( Bedford, MA ) |
| FSL, L.L.C. ( Lindon, UT ) | FSP Technology Inc. ( Taoyuan Hsien, TW ) | FT Products, LLC ( Kent, OH ) |
| FSM Technologies Limited( Glasgow ) | FSP-Holding AG( Baar ) | FT SYSTEM S.R.L. ( Alseno Piacenza, IT ) |
| FSN Research LLC ( Manchester, NH ) | FSP-Holding AG ( Baar, CH ) | Ft. McDowell Mohave Apache Indian Community ( Fountain Hills, AZ ) |
| FSN Research, LLC ( Manchester, NH ) | FSR Inc. ( West Paterson, NJ ) | |
|