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About product and suppliers:
        Alibaba.com offers 5,833 blackboard chalk products. About 44% of these are blackboard, 8% are chalk, and 1% are easels. 

A wide variety of blackboard chalk options are available to you, such as no, yes. You can also choose from free samples, paid samples. 

There are 5,813 blackboard chalk suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 98%, 1%, and 1% of blackboard chalk respectively. 

Blackboard chalk products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 989 with Other, 890 with ISO9001, and 524 with BSCI certification.