A fold made by pressing a groove into paper stock without cutting its fibers.
A fold made by pressing a groove into paper stock without cutting its fibers.
中义在纸张上压出一道凹痕形成折线，但不至压断纤维。
A fold made by pressing a groove into paper stock without cutting its fibers.
中义在纸张上压出一道凹痕形成折线，但不至压断纤维。