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About product and suppliers:
        Alibaba.com offers 1,479 road blocker products. About 63% of these are traffic barrier, 1% are other police & military supplies, and 1% are flower pots & planters. 

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

There are 1,445 road blocker suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and United States, which supply 92%, 2%, and 1% of road blocker respectively. 

Road blocker products are most popular in Africa, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 564 with ISO9001, 63 with Other, and 43 with OHSAS18001 certification.
        
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