Materials / Absorber Materials
- Advanced Electronics Technology Associates, Inc. [AET, Inc.]
- Advanced Semiconductor Business, Inc. [PTM Corp.]
- AET, Inc.
- Arlon, Inc. Materials for Electronics Division [Nakao Corp.]
- Cuming Corp. [AET, Inc.]
- Daiken Chemical Co., Ltd.
- E & C Engineering K.K.
- Emerson & Cuming Microwave Products, Inc. [M-RF Co., Ltd.]
- Keycom Corp.
- L-3 Communications, Narda Microwave-East [Midoriya Electric Co., Ltd.]
- Microwave Absorbers, Inc.
- MicroWave Factory Co., Ltd.
- M-RF Co., Ltd.
- Nakao Corp.
- Nihon Koshuha Co., Ltd.
- ORBIT/FR Engineering Ltd. [Micro Wave Factory Co., Ltd.]
- PTM Corp.
- Resin Designs, L.L.C. [Nakao Corp.]
- Rikei Corp.
- Sangshin Elecom Co., Ltd. [PTM Corp.]
- Taconic Co., Ltd. [PTM Corp.]
- Takitek K.K.
- Tokin EMC Engineering Co., Ltd.
- Toyama Denki Building Co., Ltd.
- Trans-Tech, Inc. [M-RF Co., Ltd.]