... /yearly calendar, company/products/advertisement adbrochure,instruction book,catalogue, card, magzine, hardcover book, softcover book, flyer, folder, sleeve, envelope, poster, ... 60g to 400g. 120g and 157g is normally used for book printing and envelope.cardboard paper:From 250g to 450g ... , 250g, 300g is the normally used for packaging box ...