Armstrong Optical
+44(0) 1604 654220
info@armstrongoptical.co.uk

清　原　耕　輔   Kosuke Kiyohara
清原光学　営業部   Kiyohara Optics / Sales
+81-3-5918-8501
opg-sales@koptic.co.jp

Kiyohara Optics Inc.
3-28-10 Funado Itabashi-Ku Tokyo, Japan 174-0041

Mersenne Optical Consulting
aprakich@gmail.com