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About product and suppliers:
        Alibaba.com offers 14,614 class sleeves products. About 6% of these are insulation materials & elements, 4% are plus size shirts & blouses, and 1% are cycling wear. 

A wide variety of class sleeves options are available to you, such as polyester / cotton, pe, and pvc. You can also choose from oem service, in-stock items. As well as from unisex, men. And whether class sleeves is free samples, or paid samples. 

There are 14,614 class sleeves suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of class sleeves respectively. 

Class sleeves products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 3,833 with ISO9001, 2,301 with ISO13485, and 2,227 with Other certification.