... board extrusion line 1.1220* 2440 2.double side skinning 3.foaming board 4.turnkey service, low ... price PVC foam board extrusion line there are two kinds of PVC foam board, one is produce ... - signs, displays, pop-up displays, exhibition boards,its two side surface is roughtly , not as refined as "celuca" ... technology, it has a very hard and smoothly two surface . it main use in inner door decoration ...