Hoang Quoc Tuan, Pham Xuan Hien, Nguyen Cong Thuat. RESEARCH, DESIGN AND MANUFACTURE OF AUTOMATIC LENGTH-BASED SPRING CLASSIFICATION MACHINE . jst [Internet]. 2019Jul.10 [cited 2024Apr.25];22:13-7. Available from: http://tapchi.utehy.edu.vn/index.php/jst/article/view/35