Plastic materials (plastics, chemical composition, time freezes, the soft, soft temperature, sensitivity to temperature, shrinkage, etc.)Type (retrieved the bones of glue or semi-automatic, automatic control system for temperature of the Channel Guide, ...)(Alkaline type, injection speed, injection pressure)Cooling timeProduct quality requirementsThe loss of heatLevel the surfaceThe frictionProduct size (length of the flow)Computer economics, ....Mold making materials
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