Over 30 years, Yee Kun Machine manufactures and offers the customized special screws and bolts, like Double-Head Screws, ,Unrestricted-Length Screws, and Multi-Strokes Special Parts; Moreover, depending on our experience of manufacturing heading machines, we not only buy and sell used machines, but also offer the service of recondtion, transformation of the second hand machines. We have many used bolt former, nut former, part former, second hand heading mahcine, open die header, thread rolling machine, hex head trimming machine, hydraulic thru feed rolling machine, three die rolling machine, washer assembly machine, wire drawing machine...etc.. all the equipments to support the fastener making factory. Hope we can help you to offer the best products and grow together for the next 30 years.