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About product and suppliers:
        Alibaba.com offers 10,728 portable trolley speaker products. About 80% of these are speaker, 12% are professional audio, video & lighting, and 1% are other consumer electronics. 

A wide variety of portable trolley speaker options are available to you, such as computer, home theatre, and mobile phone. You can also choose from portable, mini, and wireless. As well as from 2 (2.0), 1, and 5 (4.1). And whether portable trolley speaker is active, or passive. 

There are 10,775 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 3,642 with Other, 761 with ISO9001, and 222 with ISO14001 certification.