... gaskets: NBRHT, EPDMHT, Neoprene, Teflon, Viton I, Viton F Air to Air Heat ExchangerKey Description: 1, The machine takes into the ... energy of the exhaust air can enable the fresh air to lower temperature and reduce humidity in summer and do the ... , ti-pd alloy For more detail info, please feel free to visit our website or inquire us at any of your ...