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About product and suppliers:
        Alibaba.com offers 1,428 copper single sleeve products. About 1% of these are insulation materials & elements, 1% are plus size shirts & blouses. 

A wide variety of copper single sleeve options are available to you, such as free samples, paid samples. 

There are 1,432 copper single sleeve suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and South Korea, which supply 99%, 1%, and 1% of copper single sleeve respectively. 

Copper single sleeve products are most popular in North America, South America, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 201 with ISO9001, 102 with Other, and 52 with ISO/TS16949 certification.