Mei Hyie, K., Kalam, A., & Basyar Bin Ramli, M. (2018). Effect of Injection Molding Parameters on Mechanical Properties of Keychain Made of Recycled Polypropylene. International Journal of Engineering & Technology, 7(4.18), 237-241. https://doi.org/10.14419/ijet.v7i4.18.21925