An important function of Comprehensive Bonded Zone is that the domestic goods enter the bonded zone shall be treated as export . In this case ,the goods no need actual departure , customer can apply tax refunding . Tax refunding is significantly important source for productive export enterprise , which contains complicated processes . It involves foreign exchange administration, customs, commodity inspection, taxation and other departments . Enterprises sometimes make mistakes as they are not familiar to the procedures of each department . To satisfy customer’s demand , KEYSUN provide one-stop exporting agency service , including tax refunding . The professional team can master the related work such as application, certification, information audit, data entry and so on. At the same time, managing the work of transportation, customs clearance , inspection, verification, rapid settlement ,  KEYSUN can submit a one-time compliance documents , thus to make tax refunding efficiently improved .