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About product and suppliers:
        Alibaba.com offers 34,048 manhole cover products. About 34% of these are other fabrication services, 20% are casting, and 12% are other roadway products. 

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

There are 33,325 manhole cover suppliers, mainly located in Asia. The top supplying countries are China, India, and Turkey, which supply 97%, 1%, and 1% of manhole cover respectively. 

Manhole cover products are most popular in Africa, Eastern Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 13,904 with ISO9001, 5,835 with Other, and 5,267 with ISO14001 certification.