Founded in 1983, our company now spans 150 mu and operates three factories: Yangzhou Xinjiangzheng, Yangzhou Jiangyu, and Jiangsu SRTN Tools — integrating R&D, trade, and production. We specialize in thread cutting tools, end mills, and non-standard cutters, manufactured to ISO, JIS, UN, DIN, and BS standards. Our products are exported to Germany, Japan, the U.S., Russia, and the Middle East. Driven by quality and customer needs, we have evolved from single-hole processing into a national leader in step drills, thread tool series, end mills, multi-purpose taps, bridge reamers, and pipeline engineering tools. With 16 national patents for products like step drills and bridge reamers, we continue to lead through innovation and craftsmanship.