leak.7. stainless plate, coil, shell and tube or fin type efficient heat exchanger8. rs485 communication function, to realize automatic management(optional).9. electrical devices supplied from omron, fuji, te, lg.moeller and schneider.10.control mode: imported micro-computer of plc(optional).11. perfect safety protection, failure display, and not requiring professional personnel for maintenance.12. highly efficient evaporator and condenser, to save over 30% energy.13. temperature ...