e or more sets of any form flexibly according to the installation site combination of. Air inlet and outlet distance is long, dose not produce hot reflux, in high thermal efficiency, it has better effect to use its area in the winter.2.Uses the modified flame retardant PVC raw material for heat sink materials, blister mold molding, adopt the whole suspension and cellular into the wind, special corrugated structure design, dose not need to place, with a diversion, heat, water, easy to dean,easy d