Silitonga, P. E. .; Hasibuan, Y. M. .; Utama, D. W. . Snack Food Packaging Design Design (Chocolate) Using the Theory of Inventive Problem Solving (TRIZ) Method at UKM Himasweets Tembung. IRA J.Tek. Mesin Dan Apl 2023, 2, 1-4.