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About product and suppliers:
        Alibaba.com offers 768,042 block products. About 4% of these are blocks, 1% are wooden toys, and 1% are engine assembly. 

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

There are 759,275 block suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Pakistan, which supply 96%, 1%, and 1% of block respectively. 

Block products are most popular in North America, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 208,785 with ISO9001, 91,360 with Other, and 37,534 with ISO14001 certification.