... ,corona 4.size:1220*2440 Features: colorful and coroma coroplast/sign board is made of melted Polypropylene, It has ... board which is widely used in packing, advertising, decoration and stationery. Features: 1. Light weight and easy process. 2. Moisture resistance and ... , gift boxes, food packing etc. 2. Advertising: Sign board, shopwindow displays, pop-up displays, exhibition boards, picture frame ...