Yih Troun set its first milestone in 1977 as a manufactures of Milling, Drilling, Turning cutters and Carbide cutting tools in Taiwan. Since its inception, over 35 years, Y.T has always geared towards Research and Development of innovative insert type cutting tools, bearing the motto of “Increasing Production Efficiency” from our founder and president Mr. David Chen. Our trade mark products such as indexable slitting saw, UFO T-slot and thread milll products have led the company in the frontier and set a trade mark in the entire cutting tool industry.