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About product and suppliers:
        Alibaba.com offers 22,018 warning sign products. About 38% of these are traffic signal, 1% are led displays, and 1% are electronic signs. 

A wide variety of warning sign options are available to you, such as tin, aluminum alloy, and pvc sticker. You can also choose from plaque, nameplate, and medal. As well as from metal, pp, and pe. And whether warning sign is home decoration, souvenir, or promotional gifts. 

There are 21,976 warning sign suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Turkey, which supply 98%, 1%, and 1% of warning sign respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 4,649 with ISO9001, 2,474 with Other, and 1,232 with ISO14001 certification.