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About product and suppliers:
        Alibaba.com offers 573 composite door jamb products. About 56% of these are doors, 20% are door & window frames, and 1% are mouldings. 

A wide variety of composite door jamb options are available to you, such as entry doors, special doors. You can also choose from wooden, plastic. As well as from composite, solid wood, and mdf. And whether composite door jamb is interior, exterior, or commercial. 

There are 489 composite door jamb suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of composite door jamb respectively. 

Composite door jamb products are most popular in Mid East, Western Europe, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 237 with ISO9001, 61 with FSC, and 32 with Other certification.