... 99.9% Conductivity: >85% IACS Process: Copper casting + CNC Machining OEM Service Offered Material: Copper >99.9% Conductivity: >85% IACS Process ... for HV switchgear, breakers, transformer, disconnect switch etc. Contract Manufacturing, OEM Service Offeredoxygen-free copper bus bar, shaped copper bar, and ... . Our annual production capacity approaches 30, 000 metric tons. Oxygen-Free Copper Busbar