Xiamen guojia Trade Co., Ltd locate in Xiamen which called as “Garden on the Sea” in China. Since our company has established in 1999, cooperating with international well-known brand all the time and receive their advantage technology and experience, starting to R&D new products about energy economization and environment protection from 2003. Nowadays, we have held ourselves brand: GJ and GUOJIA and there are three cooperative factories specilized in producing solar water heater and heat pump water heater in China. GUOJIA produce solar water heater that is Flat-plate solar collector which prevail in international market, it is pressure resistance system and thermal efficiency higher than vacuum tube, modularization accord to design demand of integrative architecture. And have exported to UK, Spain, Mexico, Indonesia and so on. GUOJIA take advantage of new technique of water juncture exchange on R&D heat pump water heater, reducing the release of ozone which good for protecting environment. Besides, GUOJIA also develop the heat reclaim technique of air-conditioning to save the wastage of energy. GUOJIA even apply solar water heater and heat pump water heater technology to environment protection, R&D seawater desalt technology, deepen the energy economization technique to other fields.