Special outsourcing difficulties you might have 

* Too many factories and possibly non-reliable quotes.
* Inaccurately color mixing
* Factory use recycled material

Plastic Injection Molding Plastic injection mold is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the mold cavity.

Plastic Blow Molding Blow molding, also known as blow forming, is a manufacturing process by which hollow plastic parts are formed. It is a process used to produce hollow objects from thermoplastic.

Plastic Extrusion Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section. The two main advantages of this process over other manufacturing processes is its ability to create very complex cross-sections and work materials that are brittle, because the material only encounters compressive and shear stresses. It also forms finished parts with an excellent surface finish.

Plastic Rotational Molding Rotational molding is a versatile process for creating many kinds of mostly hollow plastic parts. The phrase is often shortened to rotomolding or rotomoulding.