采用对称结构梳状内浇口的同时要考虑内浇口分布位置及疏密，将直接影响充填及凝固过程中材料的质量、能量的均衡性。
Using symmetric comb-type inner gate, the location and density of inner gates can influence the mass and energy distribution of melt during filling and solidification process.
点浇口热嘴，适用于各种塑料，进浇点呈点状，产品表面有一个圆，换色性能佳。
DPSZ type hot nozzle, suitable for all kinds of product, it shows point shape when entering the gate, there is a circle on the surface of the product, easy to change the color.
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