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About product and suppliers:
        Alibaba.com offers 5,221 composite block products. About 1% of these are sandwich panels, 1% are blocks, and 1% are wooden toys. 

A wide variety of composite block options are available to you, such as eps sandwich panels, rock wool sandwich panels, and xps sandwich panels. You can also choose from nonmetal, metal. As well as from free samples, paid samples. 

There are 5,221 composite block suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of composite block respectively. 

Composite block products are most popular in North America, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 2,088 with ISO9001, 790 with Other, and 706 with ISO13485 certification.