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About product and suppliers:
        Alibaba.com offers 40,993 knob screw products. About 11% of these are furniture handles & knobs, 2% are screws, and 2% are door & window handles. 

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

There are 40,993 knob screw suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of knob screw respectively. 

Knob screw products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 9,184 with ISO9001, 5,631 with Other, and 1,657 with ISO14001 certification.