July 14, 2025

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Hot Runner vs. Cold Runner Systems in Injection Molding: A Guide for Custom Plastic Projects

In the world of plastic injection molding, one of the most critical tooling decisions lies in the choice of the runner system — the channel through which molten plastic is delivered to the mold cavities. For businesses developing custom plastic parts, this decision directly impacts production efficiency, product quality, and cost-effectiveness. The two primary runner…

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