Analisa Pengaruh Heat Treatment Terhadap Nilai Kekerasan Expeller Arm Digester di PT. Hindoli Mill Sungai Lilin. jse [Internet]. 2025 Mar. 20 [cited 2026 Oct. 14];10(2). Available from: https://jse.serambimekkah.id/index.php/jse/article/view/787