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QSA concept everything go in Ultra deeply.research will find big different.

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QSA technology that breaks the mold of conventional upgrade approaches by advancing on a new track.

Ultra CGR technology represents the pinnacle of technological achievement developed by the QSA team after extensive research and development.

QSA理念深入探索极致领域，深入研究发现巨大差异

QSA技术突破传统升级模式的思维，开辟全新升级赛道

Ultra cgr技术是qsa团队深度研癸后,开癸登上顶峰技术

matching top sound quality hifi products

enhance music dynamic contrast.

cgr is a progressive technological breakthrough in QSA

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note crystal gold red=CGR   ,￥=rmb

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