- Sayama Plant
- Location : 1275-2, Kamihirose, Sayama-city, Saitama 350-1321, Japan
- TEL : 81-4-2952-7211
- FAX : 81-4-2900-6699
- Head Office Engeneering Division
- Location : SASAZUKA NA BLDG., 1-50-1, Sasazuka, Shibuya-ku, Tokyo 151-8569, Japan
- TEL : 81-3-5453-6711
- FAX : 81-3-5453-6733
- Chitose Technical Center
- Location : Chitose Alcadia Plaza, 1-3-1, Kashiwadai-minami, Citose-city, Hokkaido 066-0009, JAPAN
- TEL : 81-123-42-0380
- FAX : 81-123-42-0386
- Furukawa NDK Co., Ltd.
- Location : 16-1, Shintakayachi, Sakuranome, Furukawa, Oosaki-city, Miyagi 989-6233, Japan
- TEL : 81-229-28-1611
- FAX : 81-229-28-1616
- Hakodate NDK Co., Ltd.
- Location : Hakodate Rinkuu Kogyo Danchi, 3-63, Suzuranoka-cho, Hakodate-city, Hokkaido 042-0958, Japan
- TEL : 81-138-32-3211
- FAX : 81-138-31-9391
- Niigata NDK Co., Ltd.
- Location : 251-1, Kawasaki, Nishikan-ku, Niigata-city, Niigata 959-0432, Japan
- TEL : 81-256-88-3355
- FAX : 81-256-88-3359
- NDK America, Inc. Design Center
NDK Crystal, Inc.
- Location : 701 Crystal Parkway, Belvidere, IL 61008, USA
- TEL : 1-815-544-7900
- FAX : 1-815-544-7901
- NDK Europe Ltd. German Office Design Center
- Location : Auwiesen 5 D - 74889 Sinsheim, Germany
- TEL : 49 7261 4027-0
- FAX : 49 7261 4027-79
- Asian NDK Crystal Sdn. Bhd.
NDK Quartz Malaysia Sdn. Bhd.
- Location : Lot 3, Persiaran Sabak Bernam (Section 26) Kawasan Perindustrian Hicom 40000 Shah Alam Selangor Darul Ehsan, Malaysia
- TEL : 60-3-5191-3001
- FAX : 60-3-5191-2390
- Suzhou NDK Co., Ltd.
- Location : No 20 of Zhuyuan Road, Suzhou New District, Suzhou, Jiangsu Province, China
- TEL : 86-5126-8252355
- FAX : 86-5126-8252321
