研制，生产及销售专业音响器材。包括：专业音箱，功放，调音台及周边器材。
Develop, Produce and Sales for Professional Audio Equipment. Including: Loudspeaker, Power Amplifier, Mixing Console and Audio Accessories.
乐爵士音响品牌的产品系列包括卡拉ok音箱、专业音箱、专业功放和专业周边等器材。
Rojazz audio brand of products, including Kara OK speaker, professional speaker, professional amplifier, and professional and other peripheral equipment.
电视、镭射影碟、音响器材、录像机、电脑系统及周边设备、游戏机、复印机、传真机、保安系统及家用电器。
Television, laser video, audio equipment , video tape recorder, computer and IT equipments, game machine, copycat, security systems and house electric.
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