The booming of domestic technology as well as stimulation from tide in recent years make the construction of traditional industries tends to dense technologies and automation. The metal industry is in the line for sure. To maintain and enlarge the market-shares, it is necessary and important to provide and supply with perfect quality and excellent function. Taiwan Heat Treatment Co., Ltd. (hereunder called THT), the forerunner, was established in March 1967 of which has more than 31 years' experience in this field on supplying quality products.