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About product and suppliers:
        Alibaba.com offers 31,512 warning sign products. About 42% of these are traffic signal, 1% are electronic signs, and 1% are insulation materials & elements. 

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

There are 31,436 warning sign suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of warning sign respectively. 

Warning sign products are most popular in North America, Domestic Market, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 14,638 with ISO9001, 2,789 with Other, and 1,265 with ISO14001 certification.
        
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