Hann Chang enterprise, founded in 1991 and the principal business was only the inner diameter grinding initially. Setting up additional mold department for customers to develop and design exclusive molds and fixtures on next year. The customers demand the processing accuracy day by day increased, but our bench centers and magnet stand inspection are not enough for us to meet customer requirement due to its quality. Therefore Hann Yan Precision Industry Co., Ltd. was established in 2009, and thus their own R & D design, manufacturing magnetic stand and bench centers related products and precision measuring instruments. It won Japan and a number of new national invention patent. Hann Yan itself will use their practical experience to supply with the consumers more accurate, more stable quality, processing and inspection smoother on the industrial measuring instruments. Accumulated 20 years have been awarded the highly positive evaluation of the domestic and foreign customers. High precision, well stability and durability are main reason to get the customer's trust.