letters patent of utility model for the high efficiency detachable wide channel plate heat exchanger |
letters patent of tube shell type double spiral baffel plate heat exchanger |
letters patent of welded wide channel plate heat exchanger |
letters patent of utility model for the main pump oil cooler of Hualong No.1 Nuclear Power Plant |
untility model patent certificate of heat reuse integrated heat exchange unit |
letters patent of pipe support fixed belt forming mould for heat exchange unit |
letters patent of humidification type horizontal plate air cooler |
letters palent of anti-condensation high efficiency and high voltage electrostatic precipitator |
letters of patent of special high efficency heat transfer plate for detachable plate heat exchanger |
letters patent of detachable wide channel plate heat exchanger |
letters patent of detachable ceramic multi-tube dust collector |
letters patent of removable deformed casing heat exchanger |