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About product and suppliers:
        Alibaba.com offers 564 function 1 sound system products. About 36% of these are speaker, 34% are home theatre system, and 4% are professional audio, video & lighting. 

A wide variety of function 1 sound system options are available to you, such as home theatre, stage, and mobile phone. You can also choose from wireless system, mini, and portable. As well as from passive, active, and home amplifier. And whether function 1 sound system is 2 (2.0), 3 (2.1), or 1. 

There are 566 function 1 sound system suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and South Korea, which supply 99%, 1%, and 1% of function 1 sound system respectively. 

Function 1 sound system products are most popular in South America, Africa, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 114 with ISO9001, 53 with Other, and 12 with ISO14001 certification.