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About product and suppliers:
        Alibaba.com offers 10,751 portable trolley speaker products. About 80% of these are speaker, 12% are professional audio, video & lighting, and 1% are acoustic components. 

A wide variety of portable trolley speaker options are available to you, such as computer, karaoke player, and home theatre. You can also choose from mini, wireless, and mini system. As well as from 2 (2.0), 1, and 3 (2.1). And whether portable trolley speaker is active, passive, or fm. 

There are 10,806 portable trolley speaker suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of portable trolley speaker respectively. 

Portable trolley speaker products are most popular in South America, North America, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 3,460 with Other, 742 with ISO9001, and 221 with ISO14001 certification.