... BLACK PP COROPLAST BOARDIntroduction: PP (Polypropylene) Hollow Board is made of melted Polypropylene, It has extremely light ... , pop-up displays, exhibition boards, picture frame backing, digital printing and screen-printing. 3 ... wall cladding, indoor or outdoor decoration, air conditioning ducts, windows and false ceilings. 4 ... Sheet has multi-color, suitable for art design and various pattern box ...