Injection molding resins will, because there are harmful to plastics molding steel.
The surface of the ball, complexity, functionality of products squeezed out.
The number of product requirements.
Technology products for processing plastic products (injection, blow molding, ...)
resistance to abrasion and chemical corrosion resistance.
Deformation size and shape of the heat.
The technology characteristics such as cutting, polishing.
weldability and possibilities Advanced recovery.
Cost of materials.?
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