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About product and suppliers:
        Alibaba.com offers 72,354 window single products. About 49% of these are windows, 9% are doors, and 1% are building glass. 

A wide variety of window single options are available to you, such as sliding windows, casement windows, and sliding doors. You can also choose from wooden, steel, and aluminum alloy. As well as from swing, folding, and sliding. And whether window single is horizontal, or vertical. 

There are 72,354 window single suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of window single respectively. 

Window single products are most popular in South America, North America, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 26,364 with ISO9001, 12,528 with Other, and 4,498 with ISO14001 certification.