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About product and suppliers:
        Alibaba.com offers 11,312 portable trolley speaker products. About 77% of these are speaker, 16% are professional audio, video & lighting, and 2% are home theatre system. 

A wide variety of portable trolley speaker options are available to you, such as home theatre, computer, and portable audio player. You can also choose from wireless, portable, and mini. As well as from 2 (2.0), 1, and 6 (5.1). And whether portable trolley speaker is active, or passive. 

There are 11,260 portable trolley speaker suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Singapore, which supply 99%, 1%, and 1% of portable trolley speaker respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 3,378 with Other, 1,584 with ISO9001, and 346 with ISO14001 certification.