Aliff Abdul Rahman, Aznizam Ahmad. A Comparative Study of NAK80 Steel and Beryllium Copper Moulds for Injection Moulding of Polypropylene Material. peat [Internet]. 2024 Jun. 10 [cited 2024 Jul. 18];5(1):387-92. Available from: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/14578