Dpurat has two big manufacturing bases covering an area of 38,000 square meters, with annual production capacity of 500,000 units of heat recovery equipment. It has built a sound certificate system of ISO9001, ISO14001 and IS045001 as well as CE certification. Moreover, it has two national authorized enthalpy laboratories and two noise laboratories. As a well-known manufacturer in the field of heat recovery, Dpurat has a strong R&D team working with domestic universities and possesses 60 patents. It has participated in the compilation work of several national standards and is elected as High-Tech Enterprise. Products have been exported to more than 30 countries and regions. Dpurat ranks the top in domestic market of heat and energy recovery ventilators.