Main material is PP folding box used more.

主要是目前PP材质折盒用得较多。

youdao

This is a box camera and that's a folding one.

这是一架盒式相机，那架是折合式的。

youdao

This is a box camera and that's a folding one.

这是一架盒式相机，那架是折合式的。

youdao