Special color mother: the color mother made by using the same plastic as the carrier. PP and ABS are used as carriers for PP and ABS.

Universal color mother: also used in some kind of resin (usually low melting PE) as a carrier, but it can be applied to the colouring of other resin other than its carrier resin.

General color mother is relatively simple and convenient, but there are many disadvantages, it is suggested that you choose a special color mother.