允许非公有资本进入出版物印刷、可录类光盘生产、只读类光盘复制等文化行业和领域。

Allowing the non-public-owned capital to involve in such cultural industries and fields as the printing of publications, the production of recordable CDs and the replication of CD-Rom.

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杭州大自然光电有限公司成立于1993年，是中国最早从事光盘复制生产的企业之一。

Established in 1993, HangZhou Nature Optical Electric Co., Ltd., is one of the earliest disc replication factories in China.

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本发明可以实现无损复制，提高母盘的使用寿命，选用大的数值孔径，满足高密度光盘复制的需要。

The invention can realize the nondestructive copy, extend the operating life of the master C. D. and selecting the large numerical aperture to meet the requirement for copying C. D. with high density.

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