Nangong huayang gas device limited professional production oxygen confluence row, automatically switch confluence row, oxygen connector box, carbon dioxide confluence row, oxygen points valve box, gas ratio Cabinet, oxygen terminal box, oxygen II level decompression box, and low temperature liquid pump, carbon dioxide pump, workshop set supply, products, company has advanced of machinery manufacturing device, advanced excellent of development team, science of management system, and configuration perfect of after-sales service institutions. Company's products have been widely used in chemical, food, light industry, shipbuilding, glass, steel, electronics, transportation, aerospace and other fields. I company production of low temperature liquid min loaded device series, and gas confluence row series, and workshop set supply device series, and multiple gas mixed distribution gas device series, and large small and medium dissolved b hwan device series, and high low voltage vaporizer series, and gas valve and the empty min device accessories series, and gas cylinders detection device and the vacuum drying device series, and high vacuum multilayer adiabatic low temperature pipeline series, for decades species series Shang hundreds of varieties, sold national more than 9,000 more than gas company and the related gas user units.