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About product and suppliers:
            838 block sections products are offered for sale by suppliers on Alibaba.com, of which aluminum profiles accounts for 1%. 

A wide variety of block sections options are available to you, such as door & window. You can also choose from is alloy block sections

There are 832 suppliers who sells block sections on Alibaba.com, mainly located in Asia. The top countries of suppliers are India, China, and Taiwan, China, from which the percentage of block sections supply is 1%, 97%, and 1% respectively.