Di Chun Iron Work Co., Ltd.

Di Chun Iron Work Co., Ltd. traces its development back to 1974, when Yung Yu Machinery Factory was established in Taichung to manufacture three-jaw chucks. The company later gained recognition from domestic machine tool manufacturers and moved into volume production of three-jaw chucks. In 1977, it was reorganized as Di Chun Iron Works Co., Ltd., expanded its operations, established an R&D department, and successfully developed replaceable soft-jaw chucks. The company later introduced CNC lathes and machining centers to automate production and entered the Japanese market through cooperation with a Japanese partner.

In 1992, the company launched its own AUTO STRONG brand, strengthening its position in Taiwan-made chuck products and international automation machinery markets. In 1995, it was officially renamed Di Chun Iron Work Co., Ltd. and obtained CE certification, followed by ISO quality system certification in later years. The company continued to develop high-speed rotary hydraulic cylinders, solid and through-hole power chucks, precision collet chucks, wheel chucks, extra-large bore hydraulic cylinders, pneumatic power chucks, and large chucking solutions for vertical lathes.

Today, Di Chun serves global markets under the AUTO STRONG brand, offering a full product range that includes power chucks, rotary hydraulic cylinders, collet chucks, pneumatic power chucks, soft／hard jaws, scroll chucks, and special-purpose chucks. With craftsmanship, professional service, quality-first manufacturing, customized engineering, precise production processes, and patented technologies, the company supports machine tool and metalworking customers in improving clamping stability, machining efficiency, and production quality.