OPTICAL SORTING MACHINE-SHYANG TAI HARDENING METAL CO., LTD. dedicated to mold manufacturing for screws in Taiwan, has been founded for 40 years. With the spirit of innovation and change, a service site was set in Kaohsiung Taiwan in 1975. We were the ﬁrs - 祥泰超硬金屬有限公司 SHYANG TAI HARDENING METAL CO., LTD