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About product and suppliers:
        Alibaba.com offers 2,218 hollow block plastic products. About 20% of these are moulds, 4% are plastic sheets, and 1% are other plastic products. 

A wide variety of hollow block plastic options are available to you, such as plastic, pp, and metal. You can also choose from free samples, paid samples. 

There are 2,220 hollow block plastic suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 97%, 1%, and 1% of hollow block plastic respectively. 

Hollow block plastic products are most popular in Africa, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 601 with ISO9001, 290 with Other, and 69 with ISO14001 certification.