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About product and suppliers:
        Alibaba.com offers 1,081 diaphragm wall products. About 20% of these are construction machinery parts, 14% are other construction machinery, and 8% are pumps. 

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

There are 1,064 diaphragm wall suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and South Korea, which supply 97%, 1%, and 1% of diaphragm wall respectively. 

Diaphragm wall products are most popular in Southeast Asia, Domestic Market, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 529 with ISO9001, 105 with Other, and 56 with ISO14001 certification.