Xi'an Huaou Precision Machinery Co., Ltd., Xi'an Xihang Group Wright Aviation Manufacturing Technology Co., Ltd., Pharmaron Chemical (Xi'an) New Drug Technology Co., Ltd., etc. At present, 52 domestic and foreign companies have been introduced to the Comprehensive Bonded Zone, including 15 companies listed in the top five categories. An industrial structure has been formed that is dominated by high-end aviation manufacturing, supplemented by electronic components, jewelry processing, and service trade.