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About product and suppliers:
        Alibaba.com offers 1,709 passive radiator products. About 62% of these are speaker, 11% are heat sinks, and 4% are hvac systems & parts. 

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

There are 1,699 passive radiator suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Denmark, and Hong Kong, which supply 99%, 1%, and 1% of passive radiator respectively. 

Passive radiator products are most popular in North America, Western Europe, and Southern Europe. 

You can ensure product safety by selecting from certified suppliers, including 680 with ISO9001, 200 with Other, and 199 with ISO14001 certification.