Common seal the shell is made from the book stereoplasm paerboard, soft cover, the nucleus Raphe Magnus paper etc.
常见的书封壳是由硬质纸板、软质封面、中缝纸等加而成。
Common seal the shell is made from the book stereoplasm paerboard, soft cover, the nucleus Raphe Magnus paper etc.
常见的书封壳是由硬质纸板、软质封面、中缝纸等加而成。
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