Ningbo Yishan Hardware Co., LTD (DURATUFF TOOLS, LLC) established 2008, 65 skilled staff, 31500sqf facility proudly serving global Automotive Fastener Industry.
We have built our reputation on a strong commitment to our reliable quality products, excellent customer service. We have achieved and maintained ISO 9001 certification and have been ISO certified since the year 2010.
We are also MAThread licensed.
Our mission is to deliver on-time, durable thread-rolling dies to screw factories, ensuring long service life, consistent quality, and reliable performance across every batch. We uphold safety, integrity, and cleanliness as the foundation of our production—from raw materials to final inspection. Through precise engineering, rigorous quality gates, and proactive service, we provide transparent communication, dependable lead times, and responsive after-sales support. Continuous improvement empowers partners to meet schedules and drive lasting success in fastener manufacturing.
Our dies extend die life, significantly lowering your cost per part, maximizing your ROI.
We bring 18 years of market experience and a dedicated team of 65 skilled professionals who truly understand your needs.
Our dies produce a consistent thread form for easy setup and dependable performance on every batch.
