Toan Thang, Nguyen, and Nguyen Thanh Nam. “PLC APPLICATION IN WASHING-POWDER PACKING SYSTEMS”. Science and Technology Development Journal 4, no. 5&6 (June 30, 2001): 32-37. Accessed July 22, 2024. https://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3493.