Abstract: Powder coating composition, prepared by process comprising the steps of providing a primary film-forming component and one or more other, different, components selected from film-forming components and non-film-forming components, each said component consisting of solid particles and each particle of said primary film-forming component comprising a solid polymeric binder system at least a portion of which is a film-forming resin in an amount sufficient to impart film forming properties to the composition, the particles of said other, different, components containing at least one substance that, when processed into a coating with said primary film-forming component, provides with said primary film-forming component said desired appearance or performance attribute to said coating, provided that, if the agglomerate contains a metallic or luster component and a fluidizable film-forming component, it also contains an incompatible film-forming component or a non-film-forming performance component, or two or more su