Siregar E, Irianto Nadeak S, Agustina I, Panjaitan P. Manufacture of Eco-cleaner Based on Eco-enzyme Reinforced Catalyst as Reduction of Metals and Impurities on Roller and Blanked to Improve Offset Quality. KEG [Internet]. 2024Mar.7 [cited 2024May15];6(1):323–330. Available from: https://knepublishing.com/index.php/KnE-Engineering/article/view/15391