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About product and suppliers:
        Alibaba.com offers 23,307 4mm gray glass products. About 7% of these are building glass, 1% are car stickers. 

A wide variety of 4mm gray glass options are available to you, such as free samples, paid samples. 

There are 23,307 4mm gray glass suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 4mm gray glass respectively. 

mm gray glass products are most popular in North America, Western Europe, and Central America. 

You can ensure product safety by selecting from certified suppliers, including 20,014 with Other, 1,013 with ISO9001, and 98 with ISO14001 certification.