... efficency,Self-cleaning ,Low operation cost,Control conveniently. rotating heat exchanger:High heat recovery efficency,Self-cleaning ,Low ... the rotate.Double fan side ensure the best effect of self-cleaning;Low operation cost:special rotating stucture ensure ... (Q)-15004,800~11,00017004601550150038011ZLX(Q)-17006,100~14,30019004601750170046012ZLX(Q)-19007,600~17,80021004601950190053013ZLX(Q)-20008, ...