Founded in 1993, approved by the then Ministry of Foreign Trade and Economic Cooperation, PRC, Tianjin Tiangao International Economic Development Corp. (Tiangao) is a comprehensive foreign trading company and a wholly owned subsidiary of Nankai Guard Group. With the strong support of institutions of higher learning in the City of Tianjin and a host of high-tech products developed by them, Tiangao operates as a state-owned multi-business line import and export company trading mainly in high-tech products including the automatic vending machines and air cleaners.

Tiangao's patented product "Air Cleaner" is capable of decomposing such harmful gases as formaldehyde etc. and is efficient for rapid disinfection and sterilization to perform effective preventive functions against such infectious diseases as influenza, enteritis, etc. , suitable for use in hospitals, homes and various public places. These serial products have on many occasions been awarded gold medals, including Gold Medal at the China New Technology Patented New Products Fair, the Special Gold Medal, Gold Medal at the First Chinese Patented New Technologies Fair, Gold Medal at the 51st Eureka World Inventions Fair; and have been included in the Lists of "Qualified Fine Products through Random Inspection and Monitoring under State Supervision for Promotion in 1999", "Favored Goods by Consumers Nationwide", "March 15th Accredited Enterprises and Products" and "Accredited Products by Consumers of the New Century"These products are sold far and wide to Canada, Japan and the United States of America.