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About product and suppliers:
        Alibaba.com offers 31,856 warning sign products. About 42% of these are traffic signal, 1% are electronic signs, and 1% are other advertising equipment. 

A wide variety of warning sign options are available to you, such as pe, metal. You can also choose from free samples, paid samples. 

There are 31,780 warning sign suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 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 15,277 with ISO9001, 2,640 with Other, and 1,237 with ISO14001 certification.