The National Protein Science Infrastructure - Beijing Base (Phoenix Project) is a key laboratory project of the Chinese Academy of Military Sciences, and also one of the 12 major science and technology infrastructure approved by the State Council during the "11th Five-Year Plan". The construction area of the project is about 48000 square meters. In this project, our company undertakes the base refrigeration, heating and ventilation works, uses water-cooled centrifugal units, screw units and fan coil terminals to realize the refrigeration function, and uses steam heat exchange units and radiant floor heating coils to realize the heating function, which solves the heating and cooling needs of the normal office area in winter, cooling in summer and constant temperature in the special test area all year round. The project was completed and officially put into use in March 2016.