Hoang Quoc Tuan, Pham Xuan Hien, & Nguyen Cong Thuat. (2019). RESEARCH, DESIGN AND MANUFACTURE OF AUTOMATIC LENGTH-BASED SPRING CLASSIFICATION MACHINE . UTEHY Journal of Applied Science and Technology, 22, 13-17. Retrieved from http://tapchi.utehy.edu.vn/index.php/jst/article/view/35