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日本語
English
Company
Company
Company Profile
Company History
Organization
Corporate Governance
Global Network
Quality Control
Research and Development
Procurement
Business & Products
Business & Products
Business Segment
Product Search
Product Sites
Catalogs
Investors
Investors
Management Policy
Financial Highlights
IR Library
Stock Information
General Meeting of Shareholders
IR Calendar
Sustainability
Sustainability
President’s Message
Employee Interview
Sustainability Management
Corporate Governance
Key Sustainability Issues
Sustainability Report
Sustainability Data
News
Advanced Materials Div.
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Advanced Materials Div.
Business Overview
Product list
Synthetic quartz preform for optical fiber
Oxide Single Crystals （LT/Lithium Tantalate）
Pyrolytic Boron Nitride (PBN)
Synthetic Quartz Glass Substrate
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