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About product and suppliers:
        Alibaba.com offers 1,130 chair adjustable screw products. About 3% of these are screws. 

A wide variety of chair adjustable screw options are available to you, such as free samples, paid samples. 

There are 1,132 chair adjustable screw suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Malaysia, which supply 98%, 1%, and 1% of chair adjustable screw respectively. 

Chair adjustable screw products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 183 with ISO9001, 72 with Other, and 31 with ISO14001 certification.