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About product and suppliers:
        Alibaba.com offers 3,857 extension mechanism products. About 13% of these are springs, 1% are machining, and 1% are construction machinery parts. 

A wide variety of extension mechanism options are available to you, such as broaching, drilling, and milling. You can also choose from steel, plastic, and iron. As well as from aluminum, brass, and stainless steel. And whether extension mechanism is water resistant, waterproof, or anti-curl. 

There are 3,895 extension mechanism suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Tunisia, which supply 99%, 1%, and 1% of extension mechanism respectively. 

Extension mechanism products are most popular in Domestic Market, South America, and North America. 

You can ensure product safety by selecting from certified suppliers, including 990 with ISO14001, 833 with ISO9001, and 436 with Other certification.