折迭臂杆式升降支架

set up folding bottom, cross bottom, block bottom

collapsible umbrella (folding umbrella)

trimming press (folding press, bending press, power break)

folding in the manufacture of three-dimensional articles

uniting the side walls of folding boxes while folding

folding, from a single blank, from a single cardboard

accordion door【建】;folding door【建】

zig-zag folding