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About product and suppliers:
        4,238 system drainage products are offered for sale by suppliers on Alibaba.com, of which plastic tubes accounts for 10%, metal building materials accounts for 3%, and other plastic building materials accounts for 1%. 

A wide variety of system drainage options are available to you, such as strainer, push down pop-up. You can also choose from graphic design, total solution for projects, and none system drainage, as well as from 4 inch, 2.6 inch, and 5.5 inch system drainage, and whether system drainage is 1 year, 2 years, or 5 years. 

There are 3,438 suppliers who sells system drainage on Alibaba.com, mainly located in Asia. The top countries of suppliers are United States, China, and India, from which the percentage of system drainage supply is 1%, 98%, and 1% respectively.