结构：辊模由钢筒芯构成，即便覆盖有互交式青铜和塑料模，也能避免各种弯曲变形。
Structure: by the cylinder roller mode, even is the core of bronze and mutual into plastic mould, also can avoid all sorts of bending deformation.
塑模钢的正确使用是提高塑料模具质量的关键。
The creat usage of plastic mold used steel is the key technology to improve the quality of plastic mold.
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