CIG makes virtually every type of round tube / plate fin (RTPF) coil and heat exchanger, including water coils, condenser coils, and evaporator coils, for both air conditioning and refrigeration, whether for residential OEM air conditioners or one-off made-to-fit and custom commercial coils. We make transport refrigeration coils, truck and bus air conditioning coils, marine coils, and industrial coils. We make coils. Any kind, any size, we can do it.