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本文主要介绍了日本保谷公司等光盘玻璃基板生产厂家及生产能力情况，并综述了光盘硬盘基板的取代动向及新兴势力的发展
This article mainly introduces the production status and production capacity of optical glass substrates such as Japan’s Hoya and other optical discs. It also summarizes the replacement of optical disk hard disk substrates and the development of new forces