Our firm,Gillson,have been one of a professional stainless steel fittings & valves manufacturer in Taiwan since 2002. We are specialized in semiconductor and vacuum field fitting likewise our long & short weld neck flange,blank flange,bored flange,center ring,aluminum hinged clamp and instrumentation ball valve.. For better service,we offer not only the vacuum fittings and ball valves,but also the extra-clean pipe like EP, ECB and MPEP tube.