We are making customized special screws for over 25 years,like Double-Head Screws, Unrestricted-Length Screws andother multi-stroke special screws and bolts for automotive,motorcycle, machine and others. Furthermore, Yee Kun alsospecializes in selling Re-conditioned Fastener Machineswhich help you to save your cost to buy the most suitablesecond hand machine, like Heading Machine, Thread RollingMachine and so on. Our excellent quality and reasonableprice will satisfy all your needs. 
Taiwan