- KIYOHARA OPTICS INC.
- Address:6-23-2, Shinjuku
- K.ARANO & CO., LTD.
- Address:5F Musashino Bldg 1-2 Kanda-Awajicho, Chiyoda-ku
- MORITA OPTICS CO., LTD
- Address:33-244, Azasemikawa, Tamecho
- SUGITOH CO LTD
- Address:4-25-10 Kohtohbashi,
- HOTTA OPTICAL CO., LTD.
- Address:37-33, Kariyado
- sino trading co., ltd.
- Address:Po Box 2578
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