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About product and suppliers:
        Alibaba.com offers 156 tower unit computer products. About 10% of these are desktops, 5% are speaker, and 1% are pos systems. 

A wide variety of tower unit computer options are available to you, such as all-in-one, desktop, and barebone system. You can also choose from stock, used. As well as from no monitor, 21", and 23". And whether tower unit computer is paid samples, or free samples. 

There are 149 tower unit computer suppliers, mainly located in Asia. The top supplying countries or regions are China, United States, and United Kingdom, which supply 86%, 6%, and 4% of tower unit computer respectively. 

Tower unit computer products are most popular in North America, Southeast Asia, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 80 with ISO9001, 54 with Other, and 27 with ISO14001 certification.