Established in 1979 in Taiwan, Guan Yi provides RF connector solutions to major customers worldwide.  Guan Yi is specialized in manufacture of copper ingots and rods of various sizes.  We have our own melting furnace and extruding line and manufacture customized copper ingots, OEM, RF connector components, copper products for automobile and motorcycle parts.
With a high-performance team, Guan Yi works always closely with our customers on important industrial projects when competent product and smooth delivery are required.
With decades of effort and development, from raw material,melting, extrusion, drawing, manufacturing, inspection to shipment, certified by ISO9001:2015 and ISO14001:2015, Guan Yi Precision has bloomed as a leading manufacturer in the copper parts industry.