The knob is a rounded lump or protuberance on the surface or at the end of something, as a knot on a tree trunk. B2BManufactures.Com, the most comprehensive B2B directory from Taiwan and China, incorporates full list of Knob Manufacturers and suppliers. Global buyers could view company profiles, product images & specifications, product categories, company videos of these Knob manufacturers online.
source: Dictionary.com: a multi-source dictionary