Thaisawat, P., Unsuphan, P., & Janthalakajorn, T. (2019). Plastic Injection Mold Design and Construction for LED flashlight Handle, Handshel Worklam. Vocational Education Central Region Journal, 3(1), 33–42. Retrieved from https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/246539