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If you have problems with sending messages using contact form,
or if you don’t receive a response from us within 7 business days, we are sorry to trouble you, but please contact us at the following:

HEADQUARTERS

+81-48-832-3165 (Japan)

SALES OFFICES (EU/China)
From Europe, please contact us at
SUMITA OPTICAL GLASS EUROPE GmbH

+49-911-3766-83-60 (Germany)

From China, please contact us at
SUMITA OPTICS (Dongguan) Co., Ltd. (China)

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