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About product and suppliers:
        Alibaba.com offers 16,058 4mm lead products. About 1% of these are medical-ray protective products, 1% are pet collars & leashes, and 1% are lead. 

A wide variety of 4mm lead options are available to you, such as medical x-ray equipments & accessories, medical-ray protective products. You can also choose from lead sheet, lead bar, and pet collars & leashes. As well as from eco-friendly, stocked. And whether 4mm lead is non-alloy, or is alloy. 

There are 16,800 4mm lead suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and India, which supply 92%, 6%, and 1% of 4mm lead respectively. 

mm lead products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 4,493 with ISO9001, 1,731 with ISO14001, and 1,304 with Other certification.