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About product and suppliers:
        Alibaba.com offers 772 dock block products. About 26% of these are other marine supplies, 13% are hoists, and 1% are blocks. 

A wide variety of dock block options are available to you, such as hinge, hose. You can also choose from free samples, paid samples. 

There are 775 dock block suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Spain, and Hungary, which supply 99%, 1%, and 1% of dock block respectively. 

Dock block products are most popular in Southeast Asia, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 312 with ISO9001, 145 with Other, and 35 with ISO14001 certification.