This type of paper is divided to two grand category of chemical and mechanical based on their manufactured materials that are meant to paper pulp, of course the recycled pulp could be an important material. This type of papers are including a wide range of papers which polished with machine and have weight between 70 to 100 grams and sizes of 60.90 & 70.100 for publication of commercial books, periodicals and catalogues and they are mainly produced in a paper form.