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Design of branch runner Branch runner is a melt flowing way connecting the main runner…

The concept of main runner The main runner is a conical section that connects injection…

Design principle of ejection system Product ejection is the last step of the injection process,…

Local thick wall thickness, wrong position of gates and cooling layout would lead to sink…

In the injection molding, short-filling, trapped air burns, high internal stress, flow marks and weld…